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Tsuda, Shuichi; Saito, Kimiaki
Journal of Environmental Radioactivity, 166(Part 3), p.419 - 426, 2017/01
Times Cited Count：37 Percentile：70.40(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%.
Katagiri, Masaki; Birumachi, Atsushi; Sakasai, Kaoru; Takahashi, Koji*
IEEE Transactions on Nuclear Science, 50(4), p.1043 - 1047, 2003/08
Times Cited Count：3 Percentile：25.05(Engineering, Electrical & Electronic)no abstracts in English
Baba, Shinichi; Ishihara, Masahiro; Sozawa, Shizuo; Sekino, Hajime
JAERI-Data/Code 2003-003, 394 Pages, 2003/03
JAERI-Data-Code-2003-003.pdf:13.63MB
The research on the radiation damage mechanism of heat resistant ceramic composite materials is one of the research subjects of the innovative basic research in the field of high temperature engineering, using the High Temperature engineering Test Reactor (HTTR). Three series of irradiation tests on the heat resistant ceramic composite materials, first to third irradiation test program, were carried out using the Japan Material Testing Reactor (JMTR). This is a summary report on the the first irradiation test program; irradiation induced dimensional change, thermal expansion coefficient, X-ray diffraction and 
-ray spectrum are reported.
Shibata, Taiju; Kikuchi, Takayuki; Shimakawa, Satoshi
Reactor Dosimetry in the 21st Century, p.211 - 218, 2003/00
The High Temperature Engineering Test Reactor (HTTR) is the first HTGR in Japan with a maximum power of 30 MW. The construction of it was completed successfully in March 2002. The HTTR aims to perform irradiation studies at its very wide irradiation spaces at high temperatures. Although the creep behavior of materials is measured by the large standard size specimens at out-of-pile, small size ones are generally used for in-pile creep tests because of the irradiation capability of reactors. The I-I type irradiation equipment, the first rig for the HTTR, is to be used for the in-pile creep test on a stainless steel with the standard specimens. The rig can give big tensile loads of about 9.8 kN on them. The temperatures of 550 and 600
C and the fast neutron fluence of 1.2
10
n/m
are the targets of the test. Prior to the in-pile creep test, the in-core irradiation properties at the irradiation region are to be obtained by the rig as the first irradiation test. This paper describes the dosimetry plan at the first irradiation test and the subsequent data assessment procedure.
Nagao, Yoshiharu; Takemoto, Noriyuki; Takeda, Takashi
JAERI-Tech 2001-069, 83 Pages, 2001/10
JAERI-Tech-2001-069.pdf:4.76MB
no abstracts in English
Shimakawa, Satoshi; Nagao, Yoshiharu; Fujiki, Kazuo
Reactor Dosimetry: Radiation Metrology and Assessment (ASTM STP 1398), p.244 - 251, 2001/00
no abstracts in English
Konno, Chikara; Maekawa, Fujio; Oyama, Yukio; Uno, Yoshitomo; Kasugai, Yoshimi; Wada, Masayuki*; Maekawa, Hiroshi; Ikeda, Yujiro
Journal of Nuclear Science and Technology, 37(Suppl.1), p.540 - 544, 2000/03
no abstracts in English
Maekawa, Fujio; U.Moellendorff*; P.Wilson*; Ikeda, Yujiro
Fusion Technology, 36(2), p.165 - 172, 1999/09
no abstracts in English
Nagao, Yoshiharu; Komukai, Bunsaku; Tabata, Toshio; Takeda, Takashi; Fujiki, Kazuo
JAERI-Tech 99-063, 57 Pages, 1999/08
no abstracts in English
Konno, Chikara; Maekawa, Fujio; Oyama, Yukio; Uno, Yoshitomo; Kasugai, Yoshimi; Wada, Masayuki*; Maekawa, Hiroshi; Ikeda, Yujiro
Fusion Technology 1998, 2, p.1473 - 1476, 1998/00
no abstracts in English
Iwata, Tadao*; Iwase, Akihiro
JAERI-Research 97-073, 45 Pages, 1997/10
JAERI-Research-97-073.pdf:1.55MB
no abstracts in English
; Oyama, Yukio;
JAERI-Research 97-042, 87 Pages, 1997/06
JAERI-Research-97-042.pdf:2.38MB
no abstracts in English
Maekawa, Fujio; Oyama, Yukio; Konno, Chikara; Wada, Masayuki*; Ikeda, Yujiro
Nuclear Science and Engineering, 126(2), p.187 - 200, 1997/06
Times Cited Count：3 Percentile：29.81(Nuclear Science & Technology)no abstracts in English
Maekawa, Fujio; Oyama, Yukio
Nuclear Science and Engineering, 125(2), p.205 - 217, 1997/02
Times Cited Count：5 Percentile：42.10(Nuclear Science & Technology)no abstracts in English
Li(P,n) reaction; Nakao, Noriaki*; Tanaka, Shunichi; Nakamura, Takashi*; Shin, Kazuo*; Tanaka, Susumu; Meigo, Shinichiro; Nakane, Yoshihiro; Takada, Hiroshi; Sakamoto, Yukio; et al.
JAERI-Data/Code 96-005, 46 Pages, 1996/03
JAERI-Data-Code-96-005.pdf:1.54MB
no abstracts in English
Maekawa, Fujio; Oyama, Yukio
Proc. of 9th Int. Symp. on Reactor Dosimetry, 0, p.77 - 84, 1996/00
no abstracts in English
Endo, Akira
JAERI-Tech 95-004, 19 Pages, 1995/02
no abstracts in English
; Tachikawa, Enzo; ; ;
Journal of Nuclear Science and Technology, 24(4), p.297 - 307, 1987/04
Times Cited Count：4 Percentile：44.48(Nuclear Science & Technology)no abstracts in English
; ; ; ; ; ; ; K.G.Porges*; E.F.Bennett*; T.J.Yule*; et al.
Transactions of the American Nuclear Society, 52, p.109 - 110, 1986/00
no abstracts in English
JAERI-M 84-239, 59 Pages, 1985/01
no abstracts in English
