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Tsuda, Shuichi; Saito, Kimiaki
Journal of Environmental Radioactivity, 166(Part 3), p.419 - 426, 2017/01
Times Cited Count：44 Percentile：74.17(Environmental Sciences)Air dose rate monitoring in the environment has been performed since the Fukushima Dai-ichi Nuclear Power Plant accident happened. In the measurement, NaI(Tl) and CsI(Tl) scintillation detectors are used, which are usually used in nuclear power plants and calibrated in a uniform irradiation condition in a radiation calibration field. In general, however, the detector responses are dependent on incident direction and in reality, the incident direction of the photons is not uniform in the environment. In this study, to evaluate the dependence of dose on the photon incident direction, the spectrum - dose conversion operator (G(E) function) for air kerma in a semi-infinite radiation field were obtained using the PHITS code for commonly used NaI(Tl) and CsI(Tl) scintillation detectors. The results indicate that the commonly used scintillation detectors overestimate the doses by a maximum of 40% for mono-energetic photons but under the real environment, one could obtain the dose in the semi-infinite radiation field within 20%.
Ito, Masashi; Shiraishi, Akemi; Murakami, Hiroyuki
JAERI-Tech 2001-048, 20 Pages, 2001/07
JAERI-Tech-2001-048.pdf:1.27MB
In Japan Atomic Energy Research Institute, a new type radiophotoluminescent(RPL) glass dosimeter is recently adopted replaced film badge for external personal monitoring. Some fundamental characteristics of this dosimeter, such as dose dependence linearity, energy dependence, dose evaluation accuracy against mixed irradiation condition,fading, etc.,were examined at the Facility of Radiation Standard(FRS),JAERI. The results have proved that the RPL glass dosimeter has sufficient characteristics in practical use as a personal dosimeter for all of the items examined.
H.H.Mai*; Tachibana, Hiroyuki; Kojima, Takuji
Radiation Physics and Chemistry, 53(1), p.85 - 91, 1998/00
Times Cited Count：5 Percentile：43.03(Chemistry, Physical)no abstracts in English
F.Coninckx*; A.Janett*; Kojima, Takuji; S.Onori*; M.Pantaloni*; H.Schoenbacher*; M.Tavlet*; Wieser, A.*
Applied Radiation and Isotopes, 47(11-12), p.1223 - 1229, 1996/00
Times Cited Count：5 Percentile：44.01(Chemistry, Inorganic & Nuclear)no abstracts in English
Yamaguchi, Yasuhiro; Yoshizawa, Michio
Proc. of the Int. Radiation Protection Association,Vol. 2, p.1237 - 1240, 1992/00
no abstracts in English
; ; ; ; ; Numakunai, Takao
Nihon Genshiryoku Gakkai-Shi, 21(8), p.668 - 675, 1979/00
Times Cited Count：0no abstracts in English
; Kumazawa, Shigeru; ;
Hoken Butsuri, 10(4), p.193 - 201, 1975/04
no abstracts in English
