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Co 
-ray high dose rate at radiation processing levelKojima, Takuji; Tachibana, Hiroyuki; Haneda, Noriyuki; Kaneko, Hirohisa; Haruyama, Yasuyuki; Tanaka, Ryuichi*
Radioisotopes, 50(7), p.291 - 300, 2001/07
Plaque type 
Co -ray sources having wide radiation field with high absorbed dose rates ranging of about 100
10,000Gy/h is widely used in radiation processing e.g. radiation sterilization of health care products. Calibration of such radiation processing doses or dose rates is not easy to be performed at the present standard dosimetry laboratories, since characteristics of most of their radiation field can provide collimated gamma-rays from a point source and/or lower dose rates, which are quite different from those of panoramic (uncollimated) radiation fields used in radiation processing. The high-dose calibration technique using a parallel-plate ionization chamber system has developed in the JAERI dose calibration facility. The facility equips two Co -ray plaque sources covering wide dose-rate range of 520,000 Gy/h which have overlapping dose-rate region with that at the National Institute of Advanced Industrial Science and Technology(AIST), the national standard Dosimetry laboratory in Japan. Consistency of dose calibration results at JAERI and those at AIST was verified without additional correction regarding to difference in characteristics of radiation fields involving current/exposure -rate conversion coefficients given in the dose rate level of 10100 Gy/h at the AIST and high-dose rates of 520,000 Gy/h at JAERI. It demonstrates our dose traceability to the AIST from the technical point of view. The dose calibration at JAERI covers the high-dose range of 0.5 to 
Gy with uncertainty of 
2.2% at 95% confidence level.
Makuuchi, Keizo
Porima No Hoshasen Kako, p.1 - 286, 2000/04
no abstracts in English
Functional Materials Laboratory I
JAERI-Conf 2000-003, p.174 - 0, 2000/03
JAERI-Conf-2000-003.pdf:26.6MB
no abstracts in English
Makuuchi, Keizo
Porima Daijesuto, 52(2), p.58 - 77, 2000/02
no abstracts in English
Makuuchi, Keizo
Porima Daijesuto, 52(1), p.89 - 108, 2000/01
no abstracts in English
Makuuchi, Keizo
Porima Daijesuto, 51(1), p.17 - 33, 1999/01
no abstracts in English
Yoshii, Fumio
Hoshasen Kagaku, (65), p.47 - 49, 1998/00
no abstracts in English
Sunaga, Hiromi
Dai-53-Kai Radotekku Kenkyukai Kouenkai Kaigiroku, p.25 - 33, 1997/00
no abstracts in English
Makuuchi, Keizo
Genshiryoku Kogyo, 41(7), p.30 - 35, 1995/00
no abstracts in English
Haruyama, Yasuyuki; Kojima, Takuji; Tachibana, Hiroyuki; Agematsu, Takashi; Okamoto, Jiro; *
Radioisotopes, 42(8), p.445 - 451, 1993/08
no abstracts in English
Tanaka, Ryuichi; Takehisa, Masaaki*
Hoshasen Kagaku, (56), p.9 - 19, 1993/00
no abstracts in English
Sunaga, Hiromi; Tachibana, Hiroyuki; Tanaka, Ryuichi; Okamoto, Jiro; *; Saito, Toshio*
Radiation Physics and Chemistry, 42(4-6), p.749 - 752, 1993/00
Times Cited Count：3 Percentile：38.1(Chemistry, Physical)no abstracts in English
Sunaga, Hiromi
Radioisotopes, 41(3), p.75 - 76, 1992/00
no abstracts in English
Tanaka, Ryuichi
Hoshasen Kagaku, (49), p.29 - 31, 1990/00
no abstracts in English
; *; *; Katakai, Akio; Araki, Kunio
Shikizai Kyokai-Shi, 56(2), p.80 - 87, 1983/00
no abstracts in English
; Katakai, Akio; Hagiwara, Miyuki
Shikizai Kyokai-Shi, 56(9), p.575 - 581, 1983/00
no abstracts in English
UV, EB Koka Gijutsu, p.110 - 104, 1982/00
no abstracts in English
Radiation Physics and Chemistry, 18(1-2), p.281 - 291, 1981/00
no abstracts in English
Hoshasen To Sangyo, (12), p.4 - 7, 1979/00
no abstracts in English
Tamada, Masao
no journal, ,
As international cooperation relating to radiation processing of polymers, Takasaki advanced radiation research institute (TARRI) has joined the activities of bilateral collaborations in Asia, forum for nuclear cooperation in Asia(FNCA), Asia-Pacific regional cooperative Agreement (RCA/IAEA), etc. These international activities led the technology transfers of products prepared from radiation processing of indigenous polysaccharides. Recently started information exchange meeting for uranium recovery from seawater with DOE launched the aggressive research of uranium adsorbent with cooperation of universities in US. It is expected that know-how and research outcomes in TARRI will be globally disseminated by further human resources development and network organization in the international cooperation.
