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Takezawa, Hiroki*; Tuya, D.; Obara, Toru*
Nuclear Science and Engineering, 195(11), p.1236 - 1246, 2021/11
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)This study introduces new methodologies for integrating fission reactions induced by delayed neutrons into the Multi-Region Integral Kinetic (MIK) code by using a Monte Carlo neutron transport calculation. First, it was confirmed that it is feasible to solve the Integral Kinetic Model (IKM) with delayed neutrons by the forward Euler discretization method in terms of the number of time steps. This can be done with the help of the law of radioactive decay to reflect the delay in the emission of delayed neutrons in the discretized IKM. Second, a new Monte Carlo-based methodology was introduced for calculating the cumulative distribution functions of secondary fission induced by prompt and delayed neutrons. These functions are necessary for the discretized IKM. The results of preliminary verification using the Godiva reactor confirmed the applicability of the new Monte Carlo-based methodology.
Shibata, Yasushi*; Matsumura, Akira*; Yamamoto, Tetsuya*; Akutsu, Hiroyoshi*; Yasuda, Susumu*; Nakai, Kei*; Nose, Tadao*; Yamamoto, Kazuyoshi; Kumada, Hiroaki; Hori, Naohiko; et al.
Research and Development in Neutron Capture Therapy, p.1055 - 1060, 2002/09
We prospectively investigated the predictability of blood boron concentrations using the data obtained at the first craniotomy after infusion of a low dose of sodium undecahydroclosododecaborate (BSH). Nine patients with malignant glial tumors underwent Boron neutron capture therapy (BNCT) at the Japan Atomic Energy Research Institute (JAERI) between 1995 and 2001. In 7 patients, 1g of BSH was infused before the first tumor removal and boron concentrations were determined using prompt gamma ray analysis (PGA). Then, 12 hours before BNCT, patients were infused at a dose of 100mg/kg BSH, and the boron concentrations were determined again. The boron biodistribution data showed a biexponential pharmacokinetic profile. If the final boron concentration at 6 or 9 hours after the end of the infusion is within the 95% confidence interval of the prediction, direct prediction from biexponential fit will reduce the error of blood boron concentrations during irradiation to around 6%.
Shimakawa, Satoshi; Tabata, Toshio; Komukai, Bunsaku
JAERI-Data/Code 99-045, p.31 - 0, 1999/11
JAERI-Data-Code-99-045.pdf:1.22MB
no abstracts in English
G.D.Spriggs*; R.D.Busch*; Sakurai, Takeshi; Okajima, Shigeaki
Transactions of the American Nuclear Society, 76, p.374 - 375, 1997/06
no abstracts in English
Murao, Yoshio; Araya, Fumimasa; Iwamura, Takamichi; Watanabe, Hironori
Transactions of the American Nuclear Society, 69, p.539 - 540, 1993/00
no abstracts in English
Funahashi, Satoru
JAERI-M 87-166, 107 Pages, 1987/10
no abstracts in English
JAERI-M 85-112, 67 Pages, 1985/08
no abstracts in English
; Shindo, Masami; Kondo, Tatsuo
JAERI-M 83-093, 16 Pages, 1983/07
no abstracts in English
JAERI-M 6853, 80 Pages, 1976/12
no abstracts in English
; ;
JAERI-M 6373, 50 Pages, 1976/01
no abstracts in English
; ; ; ; ; ; ; ;
JAERI-M 5557, 32 Pages, 1974/02
no abstracts in English
Zhang, Y.*; Umeda, Takemasa*; Miyamoto, Goro*; Furuhara, Tadashi*; Morooka, Satoshi
no journal, ,
