{"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://repo.lib.tokushima-u.ac.jp/ja/116905","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390855112754651648/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=385185","label":"url"}],"paper_title":{"en":"Sulfur Detection in Coke by Laser-Induced Breakdown Spectroscopy","ja":"Sulfur Detection in Coke by Laser-Induced Breakdown Spectroscopy"},"authors":{"en":[{"name":"Peng CHEN"},{"name":"Han LUO"},{"name":"Minchao CUI"},{"name":"Zhenzhen WANG"},{"name":"Deguchi Yoshihiro"},{"name":"Junjie YAN"}],"ja":[{"name":"Peng CHEN"},{"name":"Han LUO"},{"name":"Minchao CUI"},{"name":"Zhenzhen WANG"},{"name":"出口 祥啓"},{"name":"Junjie YAN"}]},"publication_date":"2022-05-15","publication_name":{"en":"ISIJ International","ja":"ISIJ International"},"volume":"Vol.62","number":"No.5","starting_page":"875","ending_page":"882","languages":["eng"],"referee":true,"identifiers":{"doi":["10.2355/isijinternational.isijint-2021-417"],"issn":["0915-1559"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://cir.nii.ac.jp/crid/1520292561194640128/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=385183","label":"url"}],"paper_title":{"en":"レーザー誘起ブレークダウン分光法の基礎と産業プロセスへの応用","ja":"レーザー誘起ブレークダウン分光法の基礎と産業プロセスへの応用"},"authors":{"en":[{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"出口 祥啓"}]},"publication_date":"2022-04","publication_name":{"en":"ぶんせき","ja":"ぶんせき"},"number":"No.4","starting_page":"138","ending_page":"143","languages":["jpn"],"referee":true,"identifiers":{"issn":["0386-2178"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85127003499&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=385186","label":"url"}],"paper_title":{"en":"Quantitative analysis of trace carbon in steel samples using collinear long-short double-pulse laser-induced breakdown spectroscopy","ja":"Quantitative analysis of trace carbon in steel samples using collinear long-short double-pulse laser-induced breakdown spectroscopy"},"authors":{"en":[{"name":"Cui Minchao"},{"name":"Guo Haorong"},{"name":"Chi Yada"},{"name":"Tan Liang"},{"name":"Yao Changfeng"},{"name":"Zhang Dinghua"},{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"Cui Minchao"},{"name":"Guo Haorong"},{"name":"Chi Yada"},{"name":"Tan Liang"},{"name":"Yao Changfeng"},{"name":"Zhang Dinghua"},{"name":"出口 祥啓"}]},"publication_date":"2022-03-15","publication_name":{"en":"Spectrochimica Acta. Part B: Atomic Spectroscopy","ja":"Spectrochimica Acta. Part B: Atomic Spectroscopy"},"volume":"Vol.191","starting_page":"106398","ending_page":"106398","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.sab.2022.106398"],"issn":["0584-8547"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.jstage.jst.go.jp/article/ieejjournal/142/2/142_73/_pdf","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390009454815698688/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=385184","label":"url"}],"paper_title":{"en":"LIBS Applications to Steel and Iron Making Processes","ja":"LIBSの鉄鋼プロセスへの応用"},"authors":{"en":[{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"出口 祥啓"}]},"description":{"en":"
1.はじめに
鉄鋼プロセスでは,鉄鉱石,コークス,石灰石などを原料として鋼板などを製造する過程で各プロセス中の元素組成を分析することが求められる.特に,溶鋼の段階で鋼材の元素組織を調査するため,溶鋼の組成を迅速に分析・制御することが重要となる.プロセス中で分析を行うために
","ja":"1.はじめに
鉄鋼プロセスでは,鉄鉱石,コークス,石灰石などを原料として鋼板などを製造する過程で各プロセス中の元素組成を分析することが求められる.特に,溶鋼の段階で鋼材の元素組織を調査するため,溶鋼の組成を迅速に分析・制御することが重要となる.プロセス中で分析を行うために
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Using Long-Short Double-Pulse Laser-Induced Breakdown Spectroscopy"},"authors":{"en":[{"name":"Wang Zhenzhen"},{"name":"Rong Kai"},{"name":"Tanaka Seiya"},{"name":"Deguchi Yoshihiro"},{"name":"Cui Minchao"},{"name":"Yan Junjie"}],"ja":[{"name":"Wang Zhenzhen"},{"name":"Rong Kai"},{"name":"田中 誠也"},{"name":"出口 祥啓"},{"name":"Cui Minchao"},{"name":"Yan Junjie"}]},"description":{"en":"The long-short double-pulse laser-induced breakdown spectroscopy (LS-DP-LIBS) method was applied to qualitative and quantitative analyses of underwater steel samples to improve the detection ability of underwater measurement. The stable plasma intensity and discrete emission lines were detected using LS-DP-LIBS when comparing the measured results of single-pulse LIBS (SP-LIBS) and LS-DP-LIBS. The long pulse produces a cavitation bubble without plasma, and the short pulse induces the plasma of steel samples within the bubble. The detection features of LS-DP-LIBS for underwater steel samples were discussed in different intra-pulse delay time, long-pulse width, and delay time conditions when analyzing the measured spectra, the signal intensity of Fe(I) at 400.524 nm and 402.187 nm, Mn(I) at 404.136 nm, and intensity ratio of Mn(I) 404.136 nm/Fe(I) 402.187 nm. The results indicated that the plasma stability and spectral signal intensity were improved significantly with a long-pulse width of 80 µs in the intra-pulse delay time of 70 µs, which were appropriate for bubble formation and plasma generation. According to the discussion of the delay time effect, the state of generated plasma was almost stable from 650 ns to 850 ns. Manganese (Mn) contents in steel samples were analyzed quantitatively when measuring five steel samples with different Mn contents using LS-DP-LIBS in optimal experimental conditions. A strong linear dependence was observed with =0.9842, which demonstrated the feasibility and appropriateness of quantitative analysis for underwater measurement using LS-DP-LIBS.","ja":"The long-short double-pulse laser-induced breakdown spectroscopy (LS-DP-LIBS) method was applied to qualitative and quantitative analyses of underwater steel samples to improve the detection ability of underwater measurement. The stable plasma intensity and discrete emission lines were detected using LS-DP-LIBS when comparing the measured results of single-pulse LIBS (SP-LIBS) and LS-DP-LIBS. The long pulse produces a cavitation bubble without plasma, and the short pulse induces the plasma of steel samples within the bubble. The detection features of LS-DP-LIBS for underwater steel samples were discussed in different intra-pulse delay time, long-pulse width, and delay time conditions when analyzing the measured spectra, the signal intensity of Fe(I) at 400.524 nm and 402.187 nm, Mn(I) at 404.136 nm, and intensity ratio of Mn(I) 404.136 nm/Fe(I) 402.187 nm. The results indicated that the plasma stability and spectral signal intensity were improved significantly with a long-pulse width of 80 µs in the intra-pulse delay time of 70 µs, which were appropriate for bubble formation and plasma generation. According to the discussion of the delay time effect, the state of generated plasma was almost stable from 650 ns to 850 ns. Manganese (Mn) contents in steel samples were analyzed quantitatively when measuring five steel samples with different Mn contents using LS-DP-LIBS in optimal experimental conditions. A strong linear dependence was observed with =0.9842, which demonstrated the feasibility and appropriateness of quantitative analysis for underwater measurement using LS-DP-LIBS."},"publication_date":"2021-08-25","publication_name":{"en":"Applied Spectroscopy","ja":"Applied Spectroscopy"},"starting_page":"37028211038634","ending_page":"37028211038634","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1177/00037028211038634"],"issn":["1943-3530"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=377048","label":"url"}],"paper_title":{"en":"Determination of manganese in submerged steel using Fraunhofer-type line generated by long-short double-pulse laser-induced breakdown spectroscopy","ja":"Determination of manganese in submerged steel using Fraunhofer-type line generated by long-short double-pulse laser-induced breakdown spectroscopy"},"authors":{"en":[{"name":"Cui Minchao"},{"name":"Deguchi Yoshihiro"},{"name":"Li Guoxi"},{"name":"Wang Zhenzhen"},{"name":"Guo Haorong"},{"name":"Qin Zixiong"},{"name":"Yao Changfeng"},{"name":"Zhang Dinghua"}],"ja":[{"name":"Cui Minchao"},{"name":"出口 祥啓"},{"name":"Li Guoxi"},{"name":"Wang Zhenzhen"},{"name":"Guo Haorong"},{"name":"Qin Zixiong"},{"name":"Yao Changfeng"},{"name":"Zhang Dinghua"}]},"publication_date":"2021-06-01","publication_name":{"en":"Spectrochimica Acta. 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An external cavity type laser diode with wide wavelength range scanning at 1335-1375 nm was used to evaluate the broadened HO absorption spectra due to the high-temperature and high-pressure effect. The spectroscopic database in high temperature of 300-2000 K and high pressure of 0.1-5.0 MPa condition has been revised to improve the accuracy for temperature quantitative analysis. CT reconstruction accuracy was also evaluated in different cases, which presented the consistent temperature distribution between CT reconstruction and assumed distributions. The spatial and temporal distributions of temperature in the high-temperature and high-pressure combustor were measured successfully by CT-TDLAS using the revised spectroscopic database.","ja":"Tunable diode laser absorption spectroscopy (TDLAS) technology is a developing method for temperature and species concentration measurements with the features of non-contact, high precision, high sensitivity, etc. The difficulty of two-dimensional (2D) temperature measurement in actual combustors has not yet been solved because of pressure broadening of absorption spectra, optical accessibility, etc. In this study, the combination of computed tomography (CT) and TDLAS with a wide scanning laser at 1335-1375 nm has been applied to a combustor for 2D temperature measurement in high temperature of 300-2000 K and high pressure of 0.1-2.5 MPa condition. An external cavity type laser diode with wide wavelength range scanning at 1335-1375 nm was used to evaluate the broadened HO absorption spectra due to the high-temperature and high-pressure effect. The spectroscopic database in high temperature of 300-2000 K and high pressure of 0.1-5.0 MPa condition has been revised to improve the accuracy for temperature quantitative analysis. CT reconstruction accuracy was also evaluated in different cases, which presented the consistent temperature distribution between CT reconstruction and assumed distributions. 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Laser diagnostics such as laser-induced breakdown spectroscopy (LIBS) makes it possible to monitor these parameters due to their fast response, high sensitivity, and non-contact features. In this study, a new collinear long and short double pulse LIBS method was developed to improve the detection ability and the measurement accuracy by the control of the plasma cooling process using the long pulse-width laser radiation. The plasma generated by the short pulse-width laser is stabilized and maintained at high temperature during the plasma cooling process by long pulse-width laser radiation. The method was demonstrated to have better measurement stability and quantitative measurement characteristics for Manganese and Carbon measurement in the steel samples compared to the normal single pulse LIBS method.","ja":"鉄鋼プロセス,ボイラなどの様々な産業プロセスにおいて,物質の元素組成をリアルタイムで計測可能な技術が求められている.鉄鋼プロセスでは,鉄鉱石,コークス,石灰石などを原料として,鋼板などを製造する過程で各プロセス中の成分組成を計測することが求められ,溶融金属の組成などをリアルタイム制御することなどが重要となる.しかし,現在まで,これらの産業プロセスで元素組成をリアルタイムで計測可能な技術や装置は実用化されていない.レーザーを用いた非接触,リアルタイム計測方法として,レーザー誘起ブレークダウン分光法(Laser Induced Breakdown Spectroscopy,LIBS)がある.本研究では,LIBSを用いた元素組成の定量計測を目的に,ロング・ショートダブルパルスLIBSの開発を行った.本手法を鋼材中のマンガン及び炭素計測に適用し,計測の安定性,定量性に優れた特性を有することを実証した."},"publication_date":"2019-01","publication_name":{"en":"JAPANESE JOURNAL OF OPTICS","ja":"光学"},"volume":"Vol.48","number":"No.1","starting_page":"8","ending_page":"12","languages":["jpn"],"referee":true,"identifiers":{"issn":["0389-6625"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=349348","label":"url"}],"paper_title":{"en":"CH4 Concentration Distribution in a Semiconductor Process Chamber Measured by the CT-TDLAS","ja":"CH4 Concentration Distribution in a Semiconductor Process Chamber Measured by the CT-TDLAS"},"authors":{"en":[{"name":"Daisuke Hayashi"},{"name":"Junya Nakai"},{"name":"Masakazu Minami"},{"name":"Kazuki Fujita"},{"name":"Takahiro Kamimoto"},{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"林 大介"},{"name":"Junya Nakai"},{"name":"Masakazu Minami"},{"name":"藤田 一輝"},{"name":"神本 崇博"},{"name":"出口 祥啓"}]},"publication_date":"2018-11-06","publication_name":{"en":"ECS Journal of Solid State Science and Technology","ja":"ECS Journal of Solid State Science and Technology"},"volume":"Vol.7","number":"No.11","starting_page":"Q211","ending_page":"Q217","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1149/2.0231811jss"],"issn":["2162-8777"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85053205445&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=345762","label":"url"}],"paper_title":{"en":"Analysis of spectral properties for coal with different volatile contents by laser-induced breakdown spectroscopy","ja":"Analysis of spectral properties for coal with different volatile contents by laser-induced breakdown spectroscopy"},"authors":{"en":[{"name":"Shunchun Yao"},{"name":"Jingbo Zhao"},{"name":"Wang Zhenzhen"},{"name":"Zhenzhen Wang"},{"name":"Deguchi Yoshihiro"},{"name":"Zhimin Lu"},{"name":"Jidong Lu"}],"ja":[{"name":"Shunchun Yao"},{"name":"Jingbo Zhao"},{"name":"Wang Zhenzhen"},{"name":"Zhenzhen Wang"},{"name":"出口 祥啓"},{"name":"Zhimin Lu"},{"name":"Jidong Lu"}]},"publication_date":"2018-11","publication_name":{"en":"Spectrochimica Acta. 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Temperature and species concentrations in the counter-flow reaction field were measured using laser diagnostics such as LIF and CARS. The main reaction in the experimental conditions is Na+H2O→NaOH+H and OH is produced by H2O+H→H2+OH. It is demonstrated that the reaction model in this study well explains the structure of the sodium-water counter-flow diffusion flame."},"publication_date":"2015-02","publication_name":{"en":"Mechanical Engineering Journal","ja":"Mechanical Engineering Journal"},"volume":"Vol.2","number":"No.1","starting_page":"14","ending_page":"29","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1299/mej.14-00029"],"issn":["2187-9745"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=291881","label":"url"}],"paper_title":{"en":"Improvement on quantitative measurement of fly ash contents using laser-induced breakdown spectroscopy","ja":"Improvement on quantitative measurement of fly ash contents using laser-induced breakdown spectroscopy"},"authors":{"en":[{"name":"Wang, Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Watanabe Hiroaki"},{"name":"Kurose 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and engines"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Kamimoto T."},{"name":"Wang Z.Z."},{"name":"Yan J.J."},{"name":"Liu J.P."},{"name":"Watanabe Hiroaki"},{"name":"Kurose Ryoichi"}],"ja":[{"name":"出口 祥啓"},{"name":"Kamimoto T."},{"name":"Wang Z.Z."},{"name":"Yan J.J."},{"name":"Liu J.P."},{"name":"Watanabe Hiroaki"},{"name":"Kurose Ryoichi"}]},"publication_date":"2014-12-22","publication_name":{"en":"Applied Thermal Engineering","ja":"Applied Thermal Engineering"},"volume":"Vol.73","number":"No.2","starting_page":"1453","ending_page":"1464","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.applthermaleng.2014.05.063"],"issn":["1359-4311"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=291882","label":"url"}],"paper_title":{"en":"Applications of laser-induced breakdown spectroscopy and laser breakdown time-of-flight mass spectrometry to thermal power plants","ja":"Applications of laser-induced breakdown spectroscopy and laser breakdown time-of-flight mass spectrometry to thermal power plants"},"authors":{"en":[{"name":"Wang, Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Yan Junjie"},{"name":"Jiping"},{"name":"Watanabe Hiroaki"},{"name":"Kurose LiuRyoichi"}],"ja":[{"name":"Wang, Z.Z."},{"name":"出口 祥啓"},{"name":"Yan Junjie"},{"name":"Jiping"},{"name":"Watanabe Hiroaki"},{"name":"Kurose LiuRyoichi"}]},"publication_date":"2014-12","publication_name":{"en":"The Review of Laser Engineering","ja":"The Review of Laser Engineering"},"volume":"Vol.42","number":"No.121","starting_page":"903","ending_page":"907","languages":["eng"],"referee":true,"identifiers":{"issn":["0387-0200"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/40020287247/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390282679590590720/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=291880","label":"url"}],"paper_title":{"en":"Measurement Accuracy Evaluation of Two Dimensional Concentration Measurement Technology Using CT Tunable Laser Absorption Spectroscopy","ja":"CT半導体レーザ吸収法を用いた2次元濃度計測の精度評価"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"神本 崇博"},{"name":"清田 祐介"}],"ja":[{"name":"出口 祥啓"},{"name":"神本 崇博"},{"name":"清田 祐介"}]},"publication_date":"2014-12","publication_name":{"en":"Transactions of the Society of Automotive Engineers of Japan","ja":"自動車技術会論文集"},"volume":"Vol.45","number":"No.6","starting_page":"965","ending_page":"970","languages":["jpn"],"referee":true,"identifiers":{"issn":["0287-8321"]},"published_paper_type":"scientific_journal"}} 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{"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84941080613&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=286110","label":"url"}],"paper_title":{"en":"Rapid detection of mercury and iodine using laser breakdown time-of-flight mass spectrometry","ja":"Rapid detection of mercury and iodine using laser breakdown time-of-flight mass spectrometry"},"authors":{"en":[{"name":"Wang Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Yan J.J."},{"name":"Liu J.P."}],"ja":[{"name":"Wang Z.Z."},{"name":"出口 祥啓"},{"name":"Yan J.J."},{"name":"Liu J.P."}]},"publication_date":"2014-07-15","publication_name":{"en":"Spectroscopy Letters; an International Journal for Rapid Communication","ja":"Spectroscopy Letters; an International Journal for Rapid 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Water is injected into an oil reservoir to maintain the reservoirs pressure and sweep some of the oil toward the production well. In an actual oil reservoir, in situ water, or connate water, is usually present and significantly impacts the water flooding process. We developed a visualization scheme utilizing a microfocused X-ray CT scanner to three-dimensionally observe the effects of connate water during water flooding at the pore scale. The water phase was injected upward into packed glass beads containing an oil phase both with and without connate water, and the process was scanned every minute until steady state was reached. Three-dimensional images were then constructed from X-ray CT data to clearly show the phenomena. Connate water significantly reduces oil recovery. In the porous medium without connate water, water flooding was able to produce approximately 1.5 times more oil than in the medium with connate water because of steadier interface movement. When injected water came in contact with connate water, the displacement front suddenly expanded into the pores containing connate water, thereby creating a jump-like movement leading to fingering. The pressure gradient between the inlet and outlet forced water to select the shortest route to the outlet. Water reached the outlet earlier when connate water exists. Short-circuiting due to fingering leads to formation of entrapped oil pockets and oil recovery yields.","ja":"Water flooding is one of the most important processes in oil production. Water is injected into an oil reservoir to maintain the reservoirs pressure and sweep some of the oil toward the production well. In an actual oil reservoir, in situ water, or connate water, is usually present and significantly impacts the water flooding process. We developed a visualization scheme utilizing a microfocused X-ray CT scanner to three-dimensionally observe the effects of connate water during water flooding at the pore scale. The water phase was injected upward into packed glass beads containing an oil phase both with and without connate water, and the process was scanned every minute until steady state was reached. Three-dimensional images were then constructed from X-ray CT data to clearly show the phenomena. Connate water significantly reduces oil recovery. In the porous medium without connate water, water flooding was able to produce approximately 1.5 times more oil than in the medium with connate water because of steadier interface movement. When injected water came in contact with connate water, the displacement front suddenly expanded into the pores containing connate water, thereby creating a jump-like movement leading to fingering. The pressure gradient between the inlet and outlet forced water to select the shortest route to the outlet. Water reached the outlet earlier when connate water exists. Short-circuiting due to fingering leads to formation of entrapped oil pockets and oil recovery yields."},"publication_date":"2014-03-13","publication_name":{"en":"Journal of Fluid Science and Technology","ja":"Journal of Fluid Science and Technology"},"volume":"Vol.9","number":"No.2","starting_page":"1","ending_page":"10","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1299/jfst.2014jfst0012"],"issn":["1880-5558"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84900834286&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=286109","label":"url"}],"paper_title":{"en":"Sensitive detection of iodine by low pressure and short pulse laser-induced breakdown spectroscopySensitive (LIBS)","ja":"Sensitive detection of iodine by low pressure and short pulse laser-induced breakdown spectroscopySensitive (LIBS)"},"authors":{"en":[{"name":"Zhang, X.B."},{"name":"Deguchi Yoshihiro"},{"name":"Wang, Z.Z."},{"name":"Yan, J.J."},{"name":"Liu, J.P."}],"ja":[{"name":"Zhang, X.B."},{"name":"出口 祥啓"},{"name":"Wang, Z.Z."},{"name":"Yan, J.J."},{"name":"Liu, J.P."}]},"publication_date":"2014-03-13","publication_name":{"en":"Journal of Analytical Atomic Spectrometry","ja":"Journal of Analytical Atomic Spectrometry"},"volume":"Vol.29","starting_page":"1082","ending_page":"1089","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1039/C4JA00044G"],"issn":["0267-9477"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/40019962229/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390282679589401600/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276158","label":"url"}],"paper_title":{"en":"Accuracy Verification on 2D Temperature Measurement Method Using CT-tunable Diode 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{"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276155","label":"url"}],"paper_title":{"en":"Application of Laser Diagnostics to Sodium-Water Chemical Reaction Field","ja":"Application of Laser Diagnostics to Sodium-Water Chemical Reaction Field"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Tamura K."},{"name":"Muranaka R."},{"name":"Kusano Koji"},{"name":"Kikuchi S."},{"name":"Kurihara A."}],"ja":[{"name":"出口 祥啓"},{"name":"Tamura K."},{"name":"Muranaka R."},{"name":"草野 剛嗣"},{"name":"Kikuchi S."},{"name":"Kurihara A."}]},"publication_date":"2013-11","publication_name":{"en":"The Review of Laser Engineering","ja":"The Review of Laser Engineering"},"volume":"Vol.41","number":"No.11","starting_page":"927","ending_page":"931","languages":["eng"],"referee":true,"identifiers":{"issn":["0387-0200"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84889068474&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276152","label":"url"}],"paper_title":{"en":"Sensitive measurement of trace mercury using low pressure laser-induced plasma","ja":"Sensitive measurement of trace mercury using low pressure laser-induced plasma"},"authors":{"en":[{"name":"Wang Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Kuwahara M."},{"name":"Kuwahara M."},{"name":"Yan J.J."},{"name":"Liu J.P."}],"ja":[{"name":"Wang Z.Z."},{"name":"出口 祥啓"},{"name":"Kuwahara M."},{"name":"Kuwahara M."},{"name":"Yan J.J."},{"name":"Liu J.P."}]},"publication_date":"2013-11","publication_name":{"en":"Japanese Journal of Applied Physics, Part 1 (Regular Papers & Short Notes)","ja":"Japanese Journal of Applied Physics, Part 1 (Regular Papers & Short 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Z.Z."},{"name":"出口 祥啓"},{"name":"Kuwahara M."},{"name":"Yan J.J."},{"name":"Liu J.P."}]},"description":{"en":"Laser-induced breakdown spectroscopy (LIBS) technology is an appealing technique compared with many other types of elemental analysis because of the fast response, high sensitivity, real-time, and noncontact features. One of the challenging targets of LIBS is the enhancement of the detection limit. In this study, the detection limit of gas-phase LIBS analysis has been improved by controlling the pressure and laser pulse width. In order to verify this method, low-pressure gas plasma was induced using nanosecond and picosecond lasers. The method was applied to the detection of Hg. The emission intensity ratio of the Hg atom to NO (IHg/INO) was analyzed to evaluate the LIBS detection limit because the NO emission (interference signal) was formed during the plasma generation and cooling process of N2 and O2 in the air. It was demonstrated that the enhancement of IHg/INO arose by decreasing the pressure to a few kilopascals, and the IHg/INO of the picosecond breakdown was always much higher than that of the nanosecond breakdown at low buffer gas pressure. Enhancement of IHg/INO increased more than 10 times at 700 Pa using picosecond laser with 35 ps pulse width. The detection limit was enhanced to 0.03 ppm (parts per million). We also saw that the spectra from the center and edge parts of plasma showed different features. Comparing the central spectra with the edge spectra, IHg/INO of the edge spectra was higher than that of the central spectra using the picosecond laser breakdown process.","ja":"Laser-induced breakdown spectroscopy (LIBS) technology is an appealing technique compared with many other types of elemental analysis because of the fast response, high sensitivity, real-time, and noncontact features. One of the challenging targets of LIBS is the enhancement of the detection limit. In this study, the detection limit of gas-phase LIBS analysis has been improved by controlling the pressure and laser pulse width. In order to verify this method, low-pressure gas plasma was induced using nanosecond and picosecond lasers. The method was applied to the detection of Hg. The emission intensity ratio of the Hg atom to NO (IHg/INO) was analyzed to evaluate the LIBS detection limit because the NO emission (interference signal) was formed during the plasma generation and cooling process of N2 and O2 in the air. It was demonstrated that the enhancement of IHg/INO arose by decreasing the pressure to a few kilopascals, and the IHg/INO of the picosecond breakdown was always much higher than that of the nanosecond breakdown at low buffer gas pressure. Enhancement of IHg/INO increased more than 10 times at 700 Pa using picosecond laser with 35 ps pulse width. The detection limit was enhanced to 0.03 ppm (parts per million). We also saw that the spectra from the center and edge parts of plasma showed different features. Comparing the central spectra with the edge spectra, IHg/INO of the edge spectra was higher than that of the central spectra using the picosecond laser breakdown process."},"publication_date":"2013-11","publication_name":{"en":"Applied Spectroscopy","ja":"Applied Spectroscopy"},"volume":"Vol.67","number":"No.11","starting_page":"1242","ending_page":"1251","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1366/13-07131"],"issn":["1943-3530"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://id.ndl.go.jp/bib/024837127","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001205199864448/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276159","label":"url"}],"paper_title":{"en":"Two Dimensional Temperature Measurement Using CT Tunable Laser Diode Absorption Spectroscopy","ja":"CT 半導体レーザ吸収法による 2 次元温度計測"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"神本 崇博"}],"ja":[{"name":"出口 祥啓"},{"name":"神本 崇博"}]},"description":{"en":"2D temperature and concentration distribution plays an important role for the combustion structure and the combustor efficiency in engines, burners, gas turbines and so on. Recently, as a measurement technique with high sensitivity and high response, laser diagnostics has been developed and applied to the actual engine combustions. With these engineering developments, transient phenomena such as start-ups and load changes in engines have been gradually elucidated in various conditions. In this study, the theoretical and experimental research has been conducted in order to develop the noncontact and fast response 2D temperature and concentration distribution measurement method. The method is based on a computed tomography(CT) technique using absorption spectra of water vapor at 1388nm. The CT tunable diode laser absorption spectroscopy method was applied to a burner and engine exhausts to measure 2D temperature distributions using 8-path, 12-path, and 16-path CT cells and the accuracy and the special resolution of this method was discussed compared with the measurement results of a thermocouple. Since CT tunable diode laser absorption spectroscopy has a potential of the kHz response time, this method enables the real-time 2D temperature measurements to be applicable in various industrial processes including engine applications.
","ja":"2D temperature and concentration distribution plays an important role for the combustion structure and the combustor efficiency in engines, burners, gas turbines and so on. Recently, as a measurement technique with high sensitivity and high response, laser diagnostics has been developed and applied to the actual engine combustions. With these engineering developments, transient phenomena such as start-ups and load changes in engines have been gradually elucidated in various conditions. In this study, the theoretical and experimental research has been conducted in order to develop the noncontact and fast response 2D temperature and concentration distribution measurement method. The method is based on a computed tomography(CT) technique using absorption spectra of water vapor at 1388nm. The CT tunable diode laser absorption spectroscopy method was applied to a burner and engine exhausts to measure 2D temperature distributions using 8-path, 12-path, and 16-path CT cells and the accuracy and the special resolution of this method was discussed compared with the measurement results of a thermocouple. Since CT tunable diode laser absorption spectroscopy has a potential of the kHz response time, this method enables the real-time 2D temperature measurements to be applicable in various industrial processes including engine applications.
"},"publication_date":"2013-08","publication_name":{"en":"Journal of the Combustion Society of Japan","ja":"日本燃焼学会誌"},"volume":"Vol.55","number":"No.173","starting_page":"249","ending_page":"254","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.20619/jcombsj.55.173_249"],"issn":["1347-1864"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84883134253&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276150","label":"url"}],"paper_title":{"en":"Quantitative elemental detection of size-segregated particles using laser-induced breakdown spectroscopy","ja":"Quantitative elemental detection of size-segregated particles using laser-induced breakdown spectroscopy"},"authors":{"en":[{"name":"Wang Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Kuwahara M."},{"name":"Taira T."},{"name":"Zhang X.B."},{"name":"Yan J.J."},{"name":"Liu J.P."},{"name":"Watanabe H."},{"name":"Kurose R."}],"ja":[{"name":"Wang Z.Z."},{"name":"出口 祥啓"},{"name":"Kuwahara M."},{"name":"Taira T."},{"name":"Zhang X.B."},{"name":"Yan J.J."},{"name":"Liu J.P."},{"name":"Watanabe H."},{"name":"Kurose R."}]},"publication_date":"2013-07","publication_name":{"en":"Spectrochimica Acta. Part B: Atomic Spectroscopy","ja":"Spectrochimica Acta. Part B: Atomic Spectroscopy"},"volume":"Vol.87","starting_page":"130","ending_page":"138","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.sab.2013.05.034"],"issn":["0584-8547"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276154","label":"url"}],"paper_title":{"en":"Laser wavelength and pressure dependence of laser breakdown time-of-flight mass spectrometry","ja":"Laser wavelength and pressure dependence of laser breakdown time-of-flight mass spectrometry"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Wang Z.Z."},{"name":"Yan J.J."},{"name":"Liu, J.P"}],"ja":[{"name":"出口 祥啓"},{"name":"Wang Z.Z."},{"name":"Yan J.J."},{"name":"Liu, J.P"}]},"publication_date":"2013-06","publication_name":{"en":"Procedia Environmental Sciences","ja":"Procedia Environmental Sciences"},"volume":"Vol.18","starting_page":"192","ending_page":"199","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.proenv.2013.04.025"],"issn":["1878-0296"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=276153","label":"url"}],"paper_title":{"en":"Rapid detection of trace heavy metals using laser breakdown time-of-flight mass spectrometry","ja":"Rapid detection of trace heavy metals using laser breakdown time-of-flight mass spectrometry"},"authors":{"en":[{"name":"Wang Z.Z."},{"name":"Deguchi Yoshihiro"},{"name":"Yan J.J."},{"name":"Liu, J.P"}],"ja":[{"name":"Wang Z.Z."},{"name":"出口 祥啓"},{"name":"Yan J.J."},{"name":"Liu, J.P"}]},"publication_date":"2013-06","publication_name":{"en":"Procedia Environmental Sciences","ja":"Procedia Environmental Sciences"},"volume":"Vol.18","starting_page":"329","ending_page":"337","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.proenv.2013.04.043"],"issn":["1878-0296"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://id.ndl.go.jp/bib/024577024","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001204614962688/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=270138","label":"url"}],"paper_title":{"en":"Application of 2D Temperature Measurement Method Using Tunable Diode Laser Absorption Spectroscopy with CT to Engine Exhausts","ja":"CT利用半導体レーザ吸収法によるリアルタイム2次元温度計測のエンジン排ガスへの適用"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"安井 大祐"},{"name":"足立 陽"}],"ja":[{"name":"出口 祥啓"},{"name":"安井 大祐"},{"name":"足立 陽"}]},"description":{"en":"Exhaust gas temperature is an important factor in NOx, THC and PM emissions of engines. Especially 2D temperature and concentration distribution plays an important role for the engine efficiency. In this study, the theoretical and experimental research has been conducted in order to develop the noncontact and fast response 2D temperature and concentration distribution measurement method. The method is based on a computed tomography method using absorption spectra of water vapor at 1388nm. It has been demonstrated that the method has been successfully applied to engine exhausts to measure 2D temperature distributions.","ja":"エンジン排気ガス温度分布を明らかにすることは燃焼器改善において重要となる.本研究では,半導体レーザ吸収法とCT(ComputedTomography)を組合せたkHz レベルの2 次元温度計測技術を開発した.本技術をエンジン排ガスに適用し,高応答で温度分布を捉えることができることを実証した."},"publication_date":"2013-03","publication_name":{"en":"Transactions of the Society of Automotive Engineers of Japan","ja":"自動車技術会論文集"},"volume":"Vol.44","number":"No.2","starting_page":"251","ending_page":"256","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.11351/jsaeronbun.44.251"],"issn":["0287-8321"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://id.ndl.go.jp/bib/024267605","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390282679592069248/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=260192","label":"url"}],"paper_title":{"en":"Development of Tunable diode laser absorption spectroscopy with optical follow fiber and NOx measurement by UV Tunable diode laser absorption","ja":"中空ファイバ利用半導体レーザ吸収法の開発と紫外域半導体レーザ吸収法を用いたNOx計測"},"authors":{"en":[{"name":"足立 陽"},{"name":"Deguchi Yoshihiro"},{"name":"小西 新一郎"}],"ja":[{"name":"足立 陽"},{"name":"出口 祥啓"},{"name":"小西 新一郎"}]},"description":{"en":"Recent years have already seen tighter regulation on harmful substances such as NOx, CO and CO2. In car engines an increasing concern in environmental issues such as air pollution, global warming and petroleum depletion has helped drive researches into various ways. The purpose of this research is the development of a prompt measurement technique which can be applicable to various engine conditions. The tunable diode laser absorption spectroscopy using the hollow fiber has been developed to satisfy above requirements. A sensitive method using tunable UV diode laser absorption spectroscopy was also discussed to detect NOx in exhausts.","ja":"エンジン排ガスに含まれるNOxなどの排出量を抑える為には燃焼プロセスをリアルタイムで把握する事が重要である.本研究では,中空ファイバを用いた半導体レーザ吸収法による高感度・高応答排ガス成分計測技術を開発すると共に,感度の高い紫外域半導体レーザ吸収法を用いたNOx計測の可能性を検討した."},"publication_date":"2013-01","publication_name":{"en":"Transactions of the Society of Automotive Engineers of Japan","ja":"自動車技術会論文集"},"volume":"Vol.44","number":"No.1","starting_page":"45","ending_page":"50","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.11351/jsaeronbun.44.45"],"issn":["0287-8321"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=260191","label":"url"}],"paper_title":{"en":"Application of Tunable Diode Laser Absorption Spectroscopy with Optical Hollow Fiber to Engine Exhaust Gas Measurement","ja":"Application of Tunable Diode Laser Absorption Spectroscopy with Optical Hollow Fiber to Engine Exhaust Gas Measurement"},"authors":{"en":[{"name":"Adachi Akira"},{"name":"Deguchi Yoshihiro"},{"name":"Konishi Shinichirou"}],"ja":[{"name":"Adachi Akira"},{"name":"出口 祥啓"},{"name":"Konishi Shinichirou"}]},"publication_date":"2012-11","publication_name":{"en":"Journal of Mechanics Engineering and Automation","ja":"Journal of Mechanics Engineering and Automation"},"volume":"Vol.2","number":"No.11","starting_page":"656","ending_page":"662","languages":["eng"],"referee":true,"identifiers":{"issn":["2159-5275"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=260189","label":"url"}],"paper_title":{"en":"Questionnaire research and development of self-motivating education method using intellectual property rights","ja":"Questionnaire research and development of self-motivating education method using intellectual property rights"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Morimoto Emi"},{"name":"Yoshida Takehito"},{"name":"Shimada Akinobu"},{"name":"Akamatsu Naoko"},{"name":"Maei Hiroyuki"},{"name":"Shiokawa Nobuaki"},{"name":"Nakanishi Hiroyuki"},{"name":"Kouda Tsuneyoshi"}],"ja":[{"name":"出口 祥啓"},{"name":"森本 恵美"},{"name":"Yoshida Takehito"},{"name":"Shimada Akinobu"},{"name":"Akamatsu Naoko"},{"name":"Maei Hiroyuki"},{"name":"Shiokawa Nobuaki"},{"name":"Nakanishi Hiroyuki"},{"name":"Kouda Tsuneyoshi"}]},"publication_date":"2012-10","publication_name":{"en":"International Journal of Engineering Pedagogy (iJEP)","ja":"International Journal of Engineering Pedagogy (iJEP)"},"volume":"Vol.2","number":"No.4","starting_page":"9","ending_page":"12","languages":["eng"],"referee":true,"identifiers":{"doi":["10.3991/ijep.v2i4.2240"],"issn":["2192-4880"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=260190","label":"url"}],"paper_title":{"en":"Development of 2D temperature and concentration measurement method using tunable diode laser absorption spectroscopy","ja":"Development of 2D temperature and concentration measurement method using tunable diode laser absorption spectroscopy"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Yasui Daisuke"},{"name":"Adachi Akira"}],"ja":[{"name":"出口 祥啓"},{"name":"Yasui Daisuke"},{"name":"Adachi Akira"}]},"publication_date":"2012-09","publication_name":{"en":"Journal of Mechanics Engineering and Automation","ja":"Journal of Mechanics Engineering and Automation"},"volume":"Vol.2","number":"No.9","starting_page":"543","ending_page":"549","languages":["eng"],"referee":true,"identifiers":{"issn":["2159-5275"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/130002050686/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001206262128768/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=247547","label":"url"}],"paper_title":{"en":"Elementary Reaction Analysis on Sodium-Water Chemical Reaction Field","ja":"ナトリウム-水化学反応場の素反応解析"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"今仲 浩一"},{"name":"高田 孝"},{"name":"山口 彰"},{"name":"菊地 晋"},{"name":"大島 宏之"}],"ja":[{"name":"出口 祥啓"},{"name":"今仲 浩一"},{"name":"高田 孝"},{"name":"山口 彰"},{"name":"菊地 晋"},{"name":"大島 宏之"}]},"description":{"en":"In a sodium-cooled fast reactor (SFR), liquid sodium is used as a heat transfer fluid because of its excellent heat transport capability. On the other hand, it has strong chemical reactivity with water vapor. One of the design basis accidents of the SFR is the water leakage into the liquid sodium flow by a breach of heat transfer tubes. This process ends up damages on the heat transport equipment in the SFR. Therefore, the study on sodium-water chemical reactions is of paramount importance for security reasons. This study aims to clarify the sodium-water reaction mechanisms using an elementary reaction analysis. A quasi one-dimensional flame model is applied to a sodium-water counter-flow reaction field. The analysis contains 25 elementary reactions, which consist of 17 H2-O2 and 8 Na-H2O reactions. Temperature and species concentrations in the counter-flow reaction field were measured using laser diagnostics such as LIF and CARS. The main reaction in the experimental conditions is Na+H2O→NaOH+H, and OH is produced by H2O+H→H2+OH. It was demonstrated that the reaction model in this study well explains the structure of the sodium-water counter-flow diffusion flame.","ja":"In a sodium-cooled fast reactor (SFR), liquid sodium is used as a heat transfer fluid because of its excellent heat transport capability. On the other hand, it has strong chemical reactivity with water vapor. One of the design basis accidents of the SFR is the water leakage into the liquid sodium flow by a breach of heat transfer tubes. This process ends up damages on the heat transport equipment in the SFR. Therefore, the study on sodium-water chemical reactions is of paramount importance for security reasons. This study aims to clarify the sodium-water reaction mechanisms using an elementary reaction analysis. A quasi one-dimensional flame model is applied to a sodium-water counter-flow reaction field. The analysis contains 25 elementary reactions, which consist of 17 H2-O2 and 8 Na-H2O reactions. Temperature and species concentrations in the counter-flow reaction field were measured using laser diagnostics such as LIF and CARS. The main reaction in the experimental conditions is Na+H2O→NaOH+H, and OH is produced by H2O+H→H2+OH. It was demonstrated that the reaction model in this study well explains the structure of the sodium-water counter-flow diffusion flame."},"publication_date":"2012-03-25","publication_name":{"en":"Transactions of The Japan Society of Mechanical Engineers, Series B","ja":"日本機械学会論文集(B編)"},"volume":"Vol.78","number":"No.787","starting_page":"480","ending_page":"484","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.1299/kikaib.78.480"],"issn":["1884-8346"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/40019137515/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1520009407624975872/","label":"url"},{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84863175424&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=247546","label":"url"}],"paper_title":{"en":"Numerical Simulation of Laser Induced Weakly Ionized Helium Plasma Process by Lattice Boltzmann Method","ja":"Numerical Simulation of Laser Induced Weakly Ionized Helium Plasma Process by Lattice Boltzmann Method"},"authors":{"en":[{"name":"Zhang Xiaobo"},{"name":"Deguchi Yoshihiro"},{"name":"Liu Jiping"}],"ja":[{"name":"Zhang Xiaobo"},{"name":"出口 祥啓"},{"name":"Liu Jiping"}]},"description":{"en":"Generation process of laser induced weakly ionized helium plasma is simulated using the lattice Boltzmann method (LBM). Maxwell equations, which are used to model the propagation of laser, are calculated by the finite difference time domain (FDTD) method. Employing coefficients of distribution functions, processes of multi-photon ionization, electron impact ionization and three-body recombination are included in Boltzmann equations. Using D2Q9 model in LBM, number densities of particles in plasma can be obtained after solving Boltzmann equations. For the energy transformation in plasma, the finite volume method (FVM) is applied to calculate the macroscopic energy equations directly coming from the continuous Boltzmann equations. Interaction between laser and plasma as well as laser induced weakly ionized plasma are demonstrate to validate the hybrid model.","ja":"Generation process of laser induced weakly ionized helium plasma is simulated using the lattice Boltzmann method (LBM). Maxwell equations, which are used to model the propagation of laser, are calculated by the finite difference time domain (FDTD) method. Employing coefficients of distribution functions, processes of multi-photon ionization, electron impact ionization and three-body recombination are included in Boltzmann equations. Using D2Q9 model in LBM, number densities of particles in plasma can be obtained after solving Boltzmann equations. For the energy transformation in plasma, the finite volume method (FVM) is applied to calculate the macroscopic energy equations directly coming from the continuous Boltzmann equations. Interaction between laser and plasma as well as laser induced weakly ionized plasma are demonstrate to validate the hybrid model."},"publication_date":"2012-01-20","publication_name":{"en":"Japanese Journal of Applied Physics, Part 1 (Regular Papers & Short Notes)","ja":"Japanese Journal of Applied Physics, Part 1 (Regular Papers & Short Notes)"},"volume":"Vol.51","number":"No.1","starting_page":"01AA04","ending_page":"01AA04","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1143/JJAP.51.01AA04"],"issn":["0021-4922"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/40017354629/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1522825130436563456/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=227189","label":"url"}],"paper_title":{"en":"知的財産立国を目指した自主的創造力創出教育について― 青色発光ダイオード発祥の地 徳島での現状とこれからの取り組み ―","ja":"知的財産立国を目指した自主的創造力創出教育について― 青色発光ダイオード発祥の地 徳島での現状とこれからの取り組み ―"},"authors":{"en":[{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"出口 祥啓"}]},"publication_date":"2010-11-18","publication_name":{"en":"Patent","ja":"パテント"},"volume":"Vol.63","number":"No.13","starting_page":"14","ending_page":"19","languages":["jpn"],"referee":true,"identifiers":{"issn":["0287-4954"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206137","label":"url"}],"paper_title":{"en":"Numerical Prediction and Optimization of Depressurized Sodium-Water Reaction Experiment with Counterflow Diffusion Flame","ja":"Numerical Prediction and Optimization of Depressurized Sodium-Water Reaction Experiment with Counterflow Diffusion Flame"},"authors":{"en":[{"name":"Yamaguchi Akira"},{"name":"Takata Takashi"},{"name":"Ohshima Hiroyuki"},{"name":"Kohara Yoshitaka"},{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"Yamaguchi Akira"},{"name":"Takata Takashi"},{"name":"Ohshima Hiroyuki"},{"name":"Kohara Yoshitaka"},{"name":"出口 祥啓"}]},"publication_date":"2009-03","publication_name":{"en":"Journal of Engineering for Gas Turbines and Power","ja":"Journal of Engineering for Gas Turbines and Power"},"volume":"Vol.131","number":"No.2","starting_page":"022907","ending_page":"022907","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1115/1.3043822"],"issn":["0742-4795"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206079","label":"url"}],"paper_title":{"en":"Detection of components in nanoparticles by resonant ionization and laser breakdown time-of flight mass spectroscopy","ja":"Detection of components in nanoparticles by resonant ionization and laser breakdown time-of flight mass spectroscopy"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Tanaka N."},{"name":"Tsuzaki M."},{"name":"Fushimi A."},{"name":"Kobayashi S."},{"name":"Tanabe K."}],"ja":[{"name":"出口 祥啓"},{"name":"Tanaka N."},{"name":"Tsuzaki M."},{"name":"Fushimi A."},{"name":"Kobayashi S."},{"name":"Tanabe K."}]},"publication_date":"2008-08","publication_name":{"en":"Environmental Chemistry","ja":"Environmental Chemistry"},"volume":"Vol.5","number":"No.6","starting_page":"402","ending_page":"412","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1071/EN08049"],"issn":["1448-2517"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206078","label":"url"}],"paper_title":{"en":"Development of Direct and Fast Response Exhaust Gas Measurement","ja":"Development of Direct and Fast Response Exhaust Gas Measurement"},"authors":{"en":[{"name":"Yamakage M."},{"name":"Muta K."},{"name":"Deguchi Yoshihiro"},{"name":"Fukada S."},{"name":"Iwase T."},{"name":"Yoshida T."}],"ja":[{"name":"Yamakage M."},{"name":"Muta K."},{"name":"出口 祥啓"},{"name":"Fukada S."},{"name":"Iwase T."},{"name":"Yoshida T."}]},"publication_date":"2008-04","publication_name":{"en":"SAE Paper 20081298","ja":"SAE Paper 20081298"},"languages":["eng"],"referee":true,"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://ci.nii.ac.jp/naid/10021123093/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1520572358407001216/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206106","label":"url"}],"paper_title":{"en":"Development of Direct and High Response Gas Measurement","ja":"自動車エンジンにおける直接・高応答ガス計測技術開発"},"authors":{"en":[{"name":"山陰 正裕"},{"name":"牟田 研二"},{"name":"Deguchi Yoshihiro"}],"ja":[{"name":"山陰 正裕"},{"name":"牟田 研二"},{"name":"出口 祥啓"}]},"publication_date":"2008-03-25","publication_name":{"en":"Transactions of the Society of Automotive Engineers of Japan","ja":"自動車技術会論文集"},"volume":"Vol.39","number":"No.2","starting_page":"123","ending_page":"128","languages":["jpn"],"referee":true,"identifiers":{"issn":["0287-8321"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/10018577130/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390282679545165568/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206074","label":"url"}],"paper_title":{"en":"Environmental Monitoring Method of Di-, Tri-, Tetra-, Penta-, and Hexa-Chlorinated Biphenyls in the Gas Phase by Use of the Picosecond Laser Ionization","ja":"Environmental Monitoring Method of Di-, Tri-, Tetra-, Penta-, and Hexa-Chlorinated Biphenyls in the Gas Phase by Use of the Picosecond Laser Ionization"},"authors":{"en":[{"name":"Dobashi S."},{"name":"Izawa Y."},{"name":"Deguchi Yoshihiro"},{"name":"Wada A."},{"name":"Hara M."}],"ja":[{"name":"Dobashi S."},{"name":"Izawa Y."},{"name":"出口 祥啓"},{"name":"Wada A."},{"name":"Hara M."}]},"description":{"en":"Utilization of the picosecond (100 ps) laser ionization was successful in measuring the mass spectra attributed to di-, tri-, tetra-, penta-, and hexa-chlorinated biphenyls. It was confirmed that the quantitative limit of this method in real-time (1 min) was 10 μg/m3N (equivalent to 1/10 of the value established as the statutory limit for PCBs in the ambient air of the workplace environment). Further evaluations of measurement accuracy based on comparisons with the results of the conventional method (gas sampling and GC-MS) demonstrated a coefficient of variation within 30%. We undertook the measurement of the exhaust gas and the work environment atmosphere in PCBs treatment plants using the LI-IT-TOFMS method, confirming that the monitoring system could be operated appropriately by the introduction of an internal standard gas (2,4-dichlorinated toluene), and that it was possible to make continuous long-term measurements for over 500 h (total measurement time, >6000 h).","ja":"Utilization of the picosecond (100 ps) laser ionization was successful in measuring the mass spectra attributed to di-, tri-, tetra-, penta-, and hexa-chlorinated biphenyls. It was confirmed that the quantitative limit of this method in real-time (1 min) was 10 μg/m3N (equivalent to 1/10 of the value established as the statutory limit for PCBs in the ambient air of the workplace environment). Further evaluations of measurement accuracy based on comparisons with the results of the conventional method (gas sampling and GC-MS) demonstrated a coefficient of variation within 30%. We undertook the measurement of the exhaust gas and the work environment atmosphere in PCBs treatment plants using the LI-IT-TOFMS method, confirming that the monitoring system could be operated appropriately by the introduction of an internal standard gas (2,4-dichlorinated toluene), and that it was possible to make continuous long-term measurements for over 500 h (total measurement time, >6000 h)."},"publication_date":"2007-02-01","publication_name":{"en":"Journal of Chemical Engineering of Japan","ja":"Journal of Chemical Engineering of Japan"},"volume":"Vol.40","number":"No.2","starting_page":"191","ending_page":"197","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1252/jcej.40.191"],"issn":["0021-9592"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-34547737954&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206077","label":"url"}],"paper_title":{"en":"Development of Heat Input Estimation Technique for Simulation of Shell Forming by Line-Heating","ja":"Development of Heat Input Estimation Technique for Simulation of Shell Forming by Line-Heating"},"authors":{"en":[{"name":"Osawa N."},{"name":"Hashimoto K."},{"name":"Sawamura J."},{"name":"Kikuchi J."},{"name":"Deguchi Yoshihiro"},{"name":"Yamaura T."}],"ja":[{"name":"Osawa N."},{"name":"Hashimoto K."},{"name":"Sawamura J."},{"name":"Kikuchi J."},{"name":"出口 祥啓"},{"name":"Yamaura T."}]},"publication_date":"2007","publication_name":{"en":"Computer Modeling in Engineering & Sciences","ja":"Computer Modeling in Engineering & Sciences"},"volume":"Vol.20","number":"No.1","starting_page":"43","ending_page":"54","languages":["eng"],"referee":true,"identifiers":{"doi":["10.3970/cmes.2007.020.043"],"issn":["1526-1492"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/130000076863/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001205263199744/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206076","label":"url"}],"paper_title":{"en":"Laser Mass Spectrometry: Rapid Analysis of Polychlorinated Biphenyls in Exhaust Gas of Disposal Plants","ja":"Laser Mass Spectrometry: Rapid Analysis of Polychlorinated Biphenyls in Exhaust Gas of Disposal Plants"},"authors":{"en":[{"name":"Dobashi S."},{"name":"Yamaguchi Y."},{"name":"Izawa Y."},{"name":"Deguchi Yoshihiro"},{"name":"Wada A."},{"name":"Hara M."}],"ja":[{"name":"Dobashi S."},{"name":"Yamaguchi Y."},{"name":"Izawa Y."},{"name":"出口 祥啓"},{"name":"Wada A."},{"name":"Hara M."}]},"description":{"en":"Effective prevention from the leakage of Polychlorinated Biphenyls (PCBs) requires the rapid analysis with on-line detection, but conventional methods require extensive analytical time (several days per sample) and are thus unsuitable. The objective of the research reported here was to develop the Laser Ionization / Ion Trap Storage / Time of Flight Mass Spectrometry (LI-IT-TOFMS) capable of monitoring PCBs within 1 min/sample, as applied to exhaust gas and the atmosphere of the disposal work environment. The achievable PCBs sensitivity for on-line measurement was found to be in the pptV range (< 0.01 mg/m3N) by means of comparison with conventional gas sampling and gas chromatograph - mass spectrometry (GC-MS). A satisfactory proportional relationship was confirmed between laser-based and conventional results for PCBs. We measured the exhaust gas in a PCBs treatment plant (hydrothermal decomposition and container treatment processes) by using the PCBs monitoring system, confirming that PCBs monitoring is possible without interference from either the main gas composition or minor coexisting substances. Accordingly, the LI-IT-TOFMS method is a useful method for the trace analysis of PCBs in exhaust gas.","ja":"Effective prevention from the leakage of Polychlorinated Biphenyls (PCBs) requires the rapid analysis with on-line detection, but conventional methods require extensive analytical time (several days per sample) and are thus unsuitable. The objective of the research reported here was to develop the Laser Ionization / Ion Trap Storage / Time of Flight Mass Spectrometry (LI-IT-TOFMS) capable of monitoring PCBs within 1 min/sample, as applied to exhaust gas and the atmosphere of the disposal work environment. The achievable PCBs sensitivity for on-line measurement was found to be in the pptV range (< 0.01 mg/m3N) by means of comparison with conventional gas sampling and gas chromatograph - mass spectrometry (GC-MS). A satisfactory proportional relationship was confirmed between laser-based and conventional results for PCBs. We measured the exhaust gas in a PCBs treatment plant (hydrothermal decomposition and container treatment processes) by using the PCBs monitoring system, confirming that PCBs monitoring is possible without interference from either the main gas composition or minor coexisting substances. Accordingly, the LI-IT-TOFMS method is a useful method for the trace analysis of PCBs in exhaust gas."},"publication_date":"2007","publication_name":{"en":"Journal of Environment and Engineering","ja":"Journal of Environment and Engineering"},"volume":"Vol.12","number":"No.1","starting_page":"25","ending_page":"34","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1299/jee.2.25"],"issn":["1880-988X"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/110006264518/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1520853833328293120/","label":"url"},{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-18344395543&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206105","label":"url"}],"paper_title":{"en":"LIBSを用いた微量重金属成分モニタリング技術の開発","ja":"LIBSを用いた微量重金属成分モニタリング技術の開発"},"authors":{"en":[{"name":"Yamaura Taketoshi"},{"name":"Deguchi Yoshihiro"},{"name":"Semba Noriaki"}],"ja":[{"name":"山浦 剛俊"},{"name":"出口 祥啓"},{"name":"仙波 範明"}]},"description":{"en":"Exhaust gas regulations for harmful components have been established in most countries of the world. In order to establish reduction technology for harmful components in exhaust gas, technology is required for the real-time detection of trace heavy metal components. In this paper, a method for the detection of trace heavy metal components using laser induced breakdown spectroscopy (LIBS) was examined with respect to powder and gas phase samnles. Detection characteristics were obtained for Pb and Cr in real ash, and measurement sensitivity under 500 mg/kg was confirmed, Detection characteristics were also obtained for As, Be, Cd, Co, Cr, Hg, Mn, Ni, Pb, Se, and Sb in gas, and measurement sensitivity under 0.1 mg/Nm^3 was confirmed for these elements, except for As and Se. Future use of high sensitivity techniques is expeded to reach a sensitivity level under 0.1 mg/Nm^3 for As and Se.","ja":"Exhaust gas regulations for harmful components have been established in most countries of the world. In order to establish reduction technology for harmful components in exhaust gas, technology is required for the real-time detection of trace heavy metal components. In this paper, a method for the detection of trace heavy metal components using laser induced breakdown spectroscopy (LIBS) was examined with respect to powder and gas phase samnles. Detection characteristics were obtained for Pb and Cr in real ash, and measurement sensitivity under 500 mg/kg was confirmed, Detection characteristics were also obtained for As, Be, Cd, Co, Cr, Hg, Mn, Ni, Pb, Se, and Sb in gas, and measurement sensitivity under 0.1 mg/Nm^3 was confirmed for these elements, except for As and Se. Future use of high sensitivity techniques is expeded to reach a sensitivity level under 0.1 mg/Nm^3 for As and Se."},"publication_date":"2005-01-25","publication_name":{"en":"Transactions of The Japan Society of Mechanical Engineers, Series C","ja":"日本機械学会論文集(C編)"},"volume":"Vol.71","number":"No.701","starting_page":"229","ending_page":"236","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.1299/kikaic.71.229"],"issn":["0387-5024"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206073","label":"url"}],"paper_title":{"en":"Determination of organic compounds in nano-particles by laser breakdown and resonant ionization time-of-flight mass spectrometry","ja":"Determination of organic compounds in nano-particles by laser breakdown and resonant ionization time-of-flight mass spectrometry"},"authors":{"en":[{"name":"Deguchi Yoshihiro"},{"name":"Tanaka N."}],"ja":[{"name":"出口 祥啓"},{"name":"Tanaka N."}]},"publication_date":"2005","publication_name":{"en":"Spectrochimica Acta. Part B: Atomic Spectroscopy","ja":"Spectrochimica Acta. Part B: Atomic Spectroscopy"},"volume":"Vol.60","number":"No.7-8","starting_page":"1236","ending_page":"1241","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.sab.2005.07.004"],"issn":["0584-8547"]},"published_paper_type":"scientific_journal"}} {"insert":{"type":"published_papers"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/110002910005/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001204356291584/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=206104","label":"url"}],"paper_title":{"en":"On-line monitoring method of PCBs by laser ionization dynamic trapping time of flight mass spectrometry(