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en: Preparation of new scintillation imaging material composed of scintillator-silica fine powders and its imaging of tritium

en: A new scintillation imaging material [scintillator-silica fine powder (FP)] was prepared using silica FPs and scintillator-encapsulating silica nanoparticles (NPs) (scintillator-silica NPs). The wt% values of scintillator-silica NPs on the scintillator-silica FPs were 38, 43, 36 and 44%. Scintillation images of 3H, 63Ni, 35S, 33P, 204Tl, 89Sr and 32P dropped on the scintillator-silica FPs were obtained at about 37 kBq per 0.1-10 µl with a charge-coupled device (CCD) imager for a 5 min exposure. In particular, high-intensity CCD images of 35S were selectively obtained using the 2.25, 4.77 and 10 µm silica FPs with scintillator-silica NPs owing to the residual S of dimethyl sulfoxide in the preparation. Scintillation images of 3H at 1670 ± 9 Bq/0.5 µl and 347 ± 6 Bq/0.5 µl dropped in a 2 mm hole on the scintillator-silica FPs (6.78 and 10 µm) were also obtained using the CCD imager for a 2 h exposure.

en: Radiation Protection Dosimetry

ja: Radiation Protection Dosimetry


en: Enhancement of counting efciency for tritium using light-excited scintillator silica pellets

en: Journal of Radioanalytical and Nuclear Chemistry


en: Scintillation imaging of tritium radioactivity distribution during tritiated thymidine uptake by PC12 cells using a melt-on scintillator

en: A scintillation image of tritium fixed in a melt-on scintillator was obtained using a charged-coupled device (CCD) imager, and a linear relationship was observed between the intensity of the scintillation image and the radioactivity of tritium. In a [(3)H]thymidine uptake experiment, a linear correlation between the intensity of the CCD image and the dilution ratio of cells was confirmed. Scintillation imaging has the potential for use in direct observation of tritium radioactivity distribution.

en: Applied Radiation and Isotopes

ja: Applied Radiation and Isotopes


en: メルトオンシンチレータを用いたトリチウム放射能の画像化

ja: メルトオンシンチレータを用いたトリチウム放射能の画像化

en: Japanese Journal of Radiation Safety Management

ja: 日本放射線安全管理学会誌


en: In situ 18F-gamma-ray induced Ag nanoparticle formation in the presence of SiO2 nanoparticles under air

ja: Journal of Radioanalytical and Nuclear Chemistry