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Journal Articles

Characteristics of commercially available CdZnTe detector as gamma-ray spectrometer under severe nuclear accident

Tanimura, Yoshihiko; Nishino, Sho; Yoshitomi, Hiroshi; Kowatari, Munehiko; Oishi, Tetsuya

Progress in Nuclear Science and Technology (Internet), 6, p.134 - 138, 2019/01

https://doi.org/10.15669/pnst.6.134

At the severe nuclear accidents like the Fukushima Daiichi Nuclear Power Plant, various radionuclides will be dispersed into the environment and raise the dose rate. The - measurements of ray spectra and identifying radionuclides using the results are important for the radiological protection from both external and internal exposure. For this application a commercially available CdZnTe spectrometer (Kromek GR-1) was characterized at the calibration fields of FRS/JAEA. The angular dependence of the detection efficiency was studied and the efficiency was kept within 15 % degradation in 135 degree incident angle, which covers 85 % of all. The usable dose range was evaluated and the spectrometer could correctly measure the ray spectra below 200 Gy/h.

Journal Articles

Neutron capture cross section and capture -ray spectra of $^{138}$ Ba in the keV-neutron energy region

Katabuchi, Tatsuya*; Yanagida, Shotaro*; Terada, Kazushi; Iwamoto, Nobuyuki; Igashira, Masayuki*

EPJ Web of Conferences, 93, p.02008_1 - 02008_2, 2015/05

https://doi.org/10.1051/epjconf/20159302008

Times Cited Count：0 Percentile：0.16(Physics, Multidisciplinary)

$^{138}$ Ba has the smallest neutron capture cross section among the stable Ba isotopes. The neutron capture reaction of $^{138}$ Ba is dominated by resolved resonances in the astrophysically relevant energy region. Thus, reliable experimental data of the capture cross section are necessary. In the present work, we measured the neutron capture cross section of $^{138}$ Ba in the energy region from 15 to 100 keV by the time-of-flight method at the Tokyo Institute of Technology. The capture cross sections were obtained from the pulse height spectra by the pulse-height weighting technique. A comparison of the present results with previous experimental data and evaluated data was made. We also derived -ray spectra by unfolding the pulse height spectra. It was revealed that the shape of -ray spectra strongly depends on neutron energy.

JAEA Reports

JENDL FP decay data file 2000

Katakura, Junichi; Yoshida, Tadashi*; Oyamatsu, Kazuhiro*; Tachibana, Takahiro*

JAERI 1343, 79 Pages, 2001/07

JAERI-1343.pdf:4.94MB

no abstracts in English

Journal Articles

Estimation of - and -ray spectra for JENDL FP decay data file

Katakura, Junichi; Yoshida, Tadashi*; Oyamatsu, Kazuhiro*; Tachibana, Takahiro*

Journal of Nuclear Science and Technology, 38(7), p.470 - 476, 2001/07

https://doi.org/10.3327/jnst.38.470

Times Cited Count：5 Percentile：38.97(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

An Irradiation test of heat-resistant ceramic composite materials; Interim report on post-irradiation examinations of the first preliminary irradiation test 97M-13A

Baba, Shinichi; Suzuki, Yoshio*; Takahashi, Tsuneo*; Ishihara, Masahiro; Hayashi, Kimio; Saito, Tamotsu; Sozawa, Shizuo; Saito, Takashi; Sekino, Hajime

JAERI-Research 2001-028, 109 Pages, 2001/03

JAERI-Research-2001-028.pdf:4.55MB

no abstracts in English

Journal Articles