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-ray response of Radix W dosimeter in several kGy rangeIchikawa, Tatsuya*; Seito, Hajime; Sato, Yoshishige*; Takehisa, Masaaki*; Kojima, Takuji; Watanabe, Hiroshi*
Shokuhin Shosha, 45(1-2), p.1 - 3, 2010/09
Seito, Hajime; Ichikawa, Tatsuya*; Hanaya, Hiroaki; Sato, Yoshishige*; Kaneko, Hirohisa; Haruyama, Yasuyuki; Watanabe, Hiroshi*; Kojima, Takuji
Radiation Physics and Chemistry, 78(11), p.961 - 965, 2009/11
Times Cited Count：3 Percentile：24.47(Chemistry, Physical)no abstracts in English
Seito, Hajime; Ichikawa, Tatsuya*; Kaneko, Hirohisa; Sato, Yoshishige*; Watanabe, Hiroshi*; Kojima, Takuji
Radiation Physics and Chemistry, 78(5), p.356 - 359, 2009/05
Times Cited Count：6 Percentile：40.91(Chemistry, Physical)Seito, Hajime; Ichikawa, Tatsuya*; Haneda, Noriyuki; Kaneko, Hirohisa; Sato, Yoshishige*; Watanabe, Hiroshi*; Kojima, Takuji
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 200, 2008/03
no abstracts in English
Seito, Hajime; Ichikawa, Tatsuya*; Watanabe, Hiroshi*; Kojima, Takuji
Radioisotopes, 56(12), p.777 - 785, 2007/12
Basic characteristics of Radix RN-15; a commercially available undyed polymethylmethacrylate dosimeter, was studied also in the dose range 1
10 kGy, for its wide application to radiation processing especially for the evaluation to decide sterilization dose and the quality assurance of food irradiation. The measurable dose range of 110 kGy is obtained at the read-out wavelength of 280 nm that is shorter than conventional read-out wavelength of 320 nm. The post-irradiation stability of dose response for 6 kGy is less than 45% for longer than 24 h after irradiation. The dose response slope at 6kGy while held at irradiation temperatures in the range -4040 degree, increases with temperature up to 20 degree as the maximum, and decreases at higher temperatures. Radix RN-15 has linear temperature dependence with a coefficient of +0.25%/degree, relative to the dose response at under 20 degree, at irradiation temperature in the range -4020 degree.
Maki, Takashi*; Ichikawa, Hajime*; Asao, Takayuki*; Horiuchi, Nobutake*
JNC TJ9400 2002-004, 228 Pages, 2001/02
JNC-TJ9400-2002-004.PDF:9.97MB
We developed two computer codes to evaluate fuel cycle requirements of FR systems, which were selected in "the feasibility studies on commercialized FBR cycle systems". One code (CODE for material balance analysis) is to calculate the material balance data to evaluate the characteristics of each candidate. The other is to calculate the time-series data of material balance of fuel cycle as a whole, to evaluate an optimum scenario of FR systems introduction. The main characteristics of these codes are as follows: (1) Common function of both codes (a) They execute burn up calculation using characteristics values of reactor calculated with ORIGEN2 code. And they adjust Pu content using a concept of physical accounting method for adjusted fissile enrichment. (b) They simulate 18 type of FR systems, 10 reactor types and 6 reprocessing types. (2) Function of CODE for material balance analysis (a) It calculates nuclide inventory and thermal power, radioactivity, radio-toxicity in the waste and environmental release. (b) It evaluates safety of geological disposal of HLW and TRU waste (iodine waste) with simplified safety estimation method. (3) Function of CODE for time-series analysis (a) In addition to FR systems, it simulates 4 type of LWR systems and 5 type of Pu-Thermal LWR systems. (b)It calculates the Pu demand-and-supply situation. The precision of these codes was checked and verified by using other code result. Then we investigation characteristics of each FR system by evaluating material balance of fuel cycle. In addition we clarified differences between scenarios of introduction of FR systems.
Seito, Hajime; Kojima, Takuji; Kaneko, Hirohisa; Haneda, Noriyuki; Ichikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*
no journal, ,
no abstracts in English
Ichikawa, Tatsuya*; Takehisa, Masaaki*; Sato, Yoshishige*; Sasuga, Tsuneo*; Watanabe, Hiroshi*; Haneda, Noriyuki; Seito, Hajime; Kojima, Takuji; Haruyama, Yasuyuki
no journal, ,
no abstracts in English
Ichikawa, Tatsuya*; Watanabe, Hiroshi*; Sato, Yoshishige*; Takehisa, Masaaki*; Seito, Hajime; Kojima, Takuji
no journal, ,
no abstracts in English
Ichikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*; Nagao, Yuto; Seito, Hajime
no journal, ,
no abstracts in English
-ray response of clear PMMA dosimeter, Radix W, at low temperatureIchikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*; Seito, Hajime; Nagao, Yuto
no journal, ,
Hasegawa, Noboru*; Nishikino, Masaharu*; Mikami, Katsuhiro*; Okada, Hajime*; Kondo, Shuji*; Kawachi, Tetsuya*; Shimada, Yoshinori*; Kurahashi, Shinri*; Kitamura, Toshiyuki*; Kotyaev, O.*; et al.
no journal, ,
no abstracts in English
