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Yamamoto, Hideaki; Yoshizawa, Michio; Murakami, Hiroyuki; Momose, Takumaro*; Tsujimura, Norio*; Kanai, Katsuta*; Cruz-Suarez, R.*
Radiation Protection Dosimetry, 125(1-4), p.88 - 92, 2007/07
Times Cited Count：0 Percentile：0.01(Environmental Sciences)The purpose of this paper is to discuss the results of the third intercomparison exercise of external radiation dosimetry organized under the Regional Cooperative Agreement (RCA) in the East Asia region of the International Atomic Energy Agency (IAEA). Twenty five laboratories from 16 member states participated in the exercise. Japan Atomic Energy Research Institute (JAERI) and Japan Nuclear Cycle Development Institute (JNC) arranged the standard irradiation of the participants' dosimeters. The results of the measurements of the irradiated dosimeters for the determination of external doses were satisfactory for all participants, demonstrating good performance in their external dosimetry.
Mehta, K.*; Kojima, Takuji; Sunaga, Hiromi
Radiation Physics and Chemistry, 68(6), p.959 - 962, 2003/12
Times Cited Count：3 Percentile：25.75(Chemistry, Physical)Applicability of the existing dosimetry systems to high-power Bremsstrahlung irradiation was investigated through a dose intercomparison study, where several dosimeters were irradiated in the dose range 4-12 kGy in identical polyethylene phantoms in a Bremsstrahlung beam obtained from a 5-MeV electron accelerator. Included in the study were alanine dosimeters molded by three different binders, three types of liquid dosimeters:ceric-cerous, dichromate and ethanol-chlorobenzen (ECB), and glutamine powder. The dosimeter responses for Bremsstrahlung radiation were analyzed at the issuing laboratories, and the dose values determined using calibration based on cobalt-60 
-ray irradiation. Dose values for all the three dose levels for all dosimetry systems were in good agreement of better than 3%. The results of the study demonstrate that these existing dosimetry systems have a potential for application to high-power Bremsstrahlung irradiation.
H.H.Mai*; N.D.Duong*; Kojima, Takuji
IAEA-TECDOC-1070, p.345 - 351, 1999/03
no abstracts in English
L.G.Lanuza*; E.G.Cabalfin*; Kojima, Takuji; Tachibana, Hiroyuki
IAEA-TECDOC-1070, p.337 - 344, 1999/03
no abstracts in English
Co -ray dosimetry at JAERI involving a two-way dose intercomparison study with NPL in the dose range 1-50kGyKojima, Takuji; Tachibana, Hiroyuki; ; *; P.H.G.Sharpe*
Radiation Physics and Chemistry, 54(6), p.619 - 626, 1999/00
Times Cited Count：10 Percentile：60.61(Chemistry, Physical)no abstracts in English
-ray dose intercomparison in the absorbed dose range, 5-50kGy, using dichromate and alanine dosimetersH.H.Mai*; Ng.D.Duong*; Kojima, Takuji
Applied Radiation and Isotopes, 47(2), p.259 - 261, 1996/00
Times Cited Count：2 Percentile：24.71(Chemistry, Inorganic & Nuclear)no abstracts in English
S.R.Nilekani*; G.R.Narayan*; B.Suseela*; R.M.Bhat*; B.L.Gupta*; Kojima, Takuji; Takizawa, Haruki; Sunaga, Hiromi; Tanaka, Ryuichi
Applied Radiation and Isotopes, 46(3), p.205 - 207, 1995/00
Times Cited Count：5 Percentile：58.38(Chemistry, Inorganic & Nuclear)no abstracts in English
Kojima, Takuji; H.L.A.Ranjith*; Haruyama, Yasuyuki; Kashiwazaki, Shigeru*; Tanaka, Ryuichi
Applied Radiation and Isotopes, 44(1-2), p.41 - 45, 1993/00
Times Cited Count：12 Percentile：74.44(Chemistry, Inorganic & Nuclear)no abstracts in English
