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Ji, Y.-Y.*; Ochi, Kotaro; Hong, S. B.*; Nakama, Shigeo; Sanada, Yukihisa; Mikami, Satoshi
Health Physics, 121(6), p.613 - 620, 2021/12
Times Cited Count:0 Percentile:0.01(Environmental Sciences)According to the implementing arrangement between JAEA (Japan Atomic Energy Agency) and KAERI (Korea Atomic Energy Research Institute) in the field of the radiation protection and environmental radiation monitoring, the joint measurement has been conducted to assess the radioactive cesium deposition in the ground around the Fukushima Daiichi Nuclear Power Plants (FDNPP). First, mobile gamma-ray spectrometry using backpack survey platform was conducted to assess the distribution of dose rate around specific three survey sites. The carborne survey using gamma-ray spectrometers, as loading inside a vehicle, was successfully conducted to compare measured dose rates in routes from site to site and verify evaluation methods including the attenuation correction.
Tomita, Jumpei; Abe, Takuya
JAEA-Research 2016-026, 12 Pages, 2017/03
An analytical method of low-level Ra isotopes in freshwater samples with combination of pre-concentration from large volume of water sample (170 L) using Powdex resin and -ray spectrometry followed by simple coprecipitation of Ra was developed. pre-concentration of Ra by batch method using Powder resin was examined, and it was shown that the amount of the resin required collecting Ra in the water sample could be determined by measuring the electric conductivity (EC) of water sample. It was found that coprecipitation of Ra with barium sulfate could remove more than 96% of potassium that increases the background. The validation of this method was confirmed by the analyses of 170 L of water sample containing the known amount of Ra isotopes with different EC. Among the analyses, the recovery of Ra was 98% in average and detection limits of Ra and Ra were achieved to be approximately 0.3 and 0.5 mBq L, respectively.
Yonezawa, Chushiro; Matsue, Hideaki; Yukawa, M.*
Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.105 - 109, 2003/01
Times Cited Count:5 Percentile:36.81(Chemistry, Analytical)no abstracts in English
Kumata, Masahiro; Oda, Tetsuzo; Miyamoto, Yutaka; Uchikoshi, Takako*; Nakahara, Yoshinori; Yamamoto, Yoichi; Hokida, Takanori; Hirota, Naoki*; Inoue, Yoji; Shinohara, Nobuo
Dai-23-Kai Kaku Busshitsu Kanri Gakkai Nihon Shibu Nenji Taikai Rombunshu, p.39 - 44, 2002/12
The International Monitoring System (IMS) will be established across the world to verify compliance with the Comprehensive Test Ban Treaty (CTBT). The IMS will be capable of detecting and identifying nuclear explosions of detonated within the atmosphere, underwater and underground. 321 monitoring stations will be set around the world as a monitoring network of the IMS. The four technologies of seismology, hydroacoustic, infrasound, and radionuclide will be used for monitoring purposes. In order to build the radionuclide monitoring network, 80 radionuclide stations were chosen. Particles in the atmosphere are collected on a filter at each station to measure radioactivity by a HP-Ge detector. Further, 40 out of these 80 stations will be equipped with an automatic radioactive noble gas sampler/analyzer. The JAERI is establishing infrastructure to host radionuclide air monitoring equipment for two raionuclide stations in Japan. This paper presents the current status of the establishment and promising performance of the stations in Japan.
Yanase, Nobuyuki; Isobe, Hiroshi*; Sato, Tsutomu*; Sanada, Yukihisa*; Matsunaga, Takeshi; Amano, Hikaru
Journal of Radioanalytical and Nuclear Chemistry, 252(2), p.233 - 239, 2002/05
Times Cited Count:6 Percentile:39.54(Chemistry, Analytical)no abstracts in English
*; Yoshida, Makoto; Oi, Yoshihiro; Taki, Mitsumasa; Manabe, Iwao
Radioisotopes, 48(11), p.32 - 36, 1999/11
no abstracts in English
Tsukada, Kazuaki; Shinohara, Nobuo; Nishinaka, Ichiro; ; Nagame, Yuichiro; Sueki, Keisuke*; *; Nakahara, Hiromichi*; *; Otsuki, Tsutomu*
Radiochimica Acta, 76(4), p.173 - 180, 1997/00
no abstracts in English
Yanase, Nobuyuki; Sekine, Keiichi
Materials Research Society Symposium Proceedings, Vol.353, 0, p.1235 - 1242, 1995/00
no abstracts in English
Usuda, Shigekazu; ; Kono, Nobuaki; Umezawa, Hirokazu
JAERI-M 90-030, 13 Pages, 1990/02
no abstracts in English
; ;
Bunseki Kagaku, 35(8), p.782 - 785, 1986/00
no abstracts in English
; *; *; *
Journal of Radioanalytical and Nuclear Chemistry, 84(2), p.431 - 440, 1984/00
Times Cited Count:4 Percentile:45.52(Chemistry, Analytical)no abstracts in English
Radioisotopes, 28(10), p.58 - 67, 1979/00
no abstracts in English
; ; Ikawa, Katsuichi; Iwamoto, K.
JAERI-M 7406, 14 Pages, 1977/11
no abstracts in English
Z.Anal.Chem., 273(2), p.103 - 107, 1975/02
no abstracts in English
; ; Umezawa, Hirokazu
Nihon Genshiryoku Gakkai-Shi, 15(4), p.239 - 247, 1973/04
no abstracts in English
; *
Nuclear Instruments and Methods, 112(3), p.437 - 442, 1973/03
no abstracts in English
;
JAERI-M 4900, 29 Pages, 1972/08
no abstracts in English
; ;
JAERI-M 4590, 40 Pages, 1971/09
no abstracts in English
; *
Radioisotopes, 17(5), p.195 - 198, 1968/00
no abstracts in English
Tomita, Jumpei
no journal, ,
no abstracts in English