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Hakoda, Teruyuki; Sunaga, Hiromi; Takizawa, Haruki; Hirota, Koichi; Kojima, Takuji
Radioisotopes, 53(2), p.59 - 69, 2004/02
no abstracts in English
Kojima, Takuji
Genshikaku Kenkyu, 48(5), p.53 - 61, 2003/12
Technology for Decomposition/detoxification of dioxins in waste incineration flue gas of 200
C was developed using a samll self-shielded electron accelerator(300keV, size: 3 
3 3 m
including shirlding materials), which is not reqired to have legal the approval of the installation for ionizing irradiation gererator. Dioxin decomposition ratio, the dioxin concentration values before and after electron beam irradiation, is higher than 90%, one order lower than initial value, at absorbed doses higher than 15kGy. The result shows decomposition mechanism for dioxins and demonstrates that endocrine disrupter activity of the flue gas also decrease by irradiation. The contents of paper was the same as one presented in the 2nd meeting on small accelerators, entitled "Promotion of use of small accelerators---".
Kojima, Takuji
Hoshasen Kagaku, 2002(73), p.43 - 46, 2002/05
no abstracts in English
-ray absorbed doses under criticality accident conditions at TRACY using tissue-equivalent dosimetersSono, Hiroki; Yanagisawa, Hiroshi; Ono, Akio; Kojima, Takuji; Soramasu, Noboru*
Nuclear Science and Engineering, 139(2), p.209 - 220, 2001/10
Times Cited Count：7 Percentile：48.68(Nuclear Science & Technology)no abstracts in English
Nakane, Yoshihiro; Sakamoto, Yukio
Nuclear Instruments and Methods in Physics Research A, 459(3), p.552 - 564, 2001/03
Times Cited Count：11 Percentile：61.99(Instruments & Instrumentation)no abstracts in English
*; *; *; *
JNC TJ8400 2000-006, 232 Pages, 2000/05
JNC-TJ8400-2000-006.pdf:7.75MB
In this research, simulations with some parameters which characterize ground water flow and the reliability evaluation for the expansion of the calculation method of groundwater flow were carried out by using the radionuclide transport computations in nearfield heterogeneous porous media. Concretely contents are follows: (1)With the series of calculation method for three-dimensional saturated/unsaturated groundwater flow and one-dimensional radionuclide transport. the computational analyses with the parameters used in JNC report in 2000 was carried out and the influence of the different input flux was evaluated. (2)The examination of the application for the different ways of inverse laplace transformation which is used in one-dimensional radionuclide tansport analysis code "MATRICS" was carried out. (3)The examination of the application of multi-element "MATRICS" (m-MATRICS) for radionuclide transport computations in nearfield heterogeneous porous media was carried out. (4)The series of calculation methods from three-dimensional saturated/unsaturated ground water flow simulation code to one-dimensional radionuclide transport simulation code was integrated.
Nakane, Yoshihiro
JAERI-Research 2000-003, p.110 - 0, 2000/02
JAERI-Research-2000-003.pdf:5.55MB
no abstracts in English
Sunaga, Hiromi
Tei Enerugi Denshisen Shosha No Oyo Gijutsu, p.36 - 49, 1999/00
no abstracts in English
Yamaguchi, Takenori
Hoshasen Jiko Iryo Kenkyukai Kaiho, (4), p.2 - 3, 1998/00
no abstracts in English
*; *
JAERI-Research 97-013, 124 Pages, 1997/03
JAERI-Research-97-013.pdf:4.93MB
no abstracts in English
Sato, Satoshi; Takatsu, Hideyuki; *; *; Iida, Hiromasa; R.Santoro*
Fusion Technology 1996, 0, p.1587 - 1590, 1997/00
no abstracts in English
*;
Radiat. Meas., 26(2), p.159 - 168, 1996/00
Times Cited Count：4 Percentile：39.42(Nuclear Science & Technology)no abstracts in English
*; *;
Applied Radiation and Isotopes, 45(7), p.759 - 765, 1994/00
Times Cited Count：2 Percentile：28.09(Chemistry, Inorganic & Nuclear)no abstracts in English
*;
Applied Radiation and Isotopes, 44(4), p.693 - 699, 1993/00
Times Cited Count：3 Percentile：38.1(Chemistry, Inorganic & Nuclear)no abstracts in English
; *; *; Tanimoto, Kenichi; Enokido, Yuji
PNC TN9410 92-208, 68 Pages, 1992/07
The plan of the gelogic disposal of high level waste that need to do estimate the effect of radiation in near field surrouding waste. We have applied "JOYO" spent fuel storage pool as irradiation field and investigated the effect of gamma radiation about quality of groundwater, because we have to obtained a basic data related geologic dispose under irradiaton condition. The experiment was applied artificial brine for simulated groundwater. The same samples were located in "JOYO" spent fuel storage pool without gamma radiation and other effects were estimated. The samples were also observed the variation of quality of artifical brine every fixed time after irradiation and were estimated the effect as the function of time, gamma irradiation were carried out from 24hours (1.010
1.310Gy) to 1440 hours (4.410
6.810Gy). The results indicate the following. (1)The change of pH, conductivity and ion concentrations in artifical brine could not be observed in the samples before and after irradiation. (2)Eh of the samples was 241mV before irradiation, but it decreased 156mV after irradiaton for 1440 hours. Eh tend to decrease by increase of the absorption dose. (3)Do of the samples before and after irradiation for 1440 hours were 20.76 and 5930 
g/
, respectively. Do tend to increases by increase of the absorption dose. (4)Before and after irradiation test for 480 hours, nitric ion was detected 2.9 and 105ppm, respectively, In no gamma irradiaton test, nitric ion was detdcted 4.0 and 5.6ppm, respectively. For 1440 hours, nitric ion was detected 15ppm after irradiation and 11ppm after rest without gamma irradiation. (5)pH, Eh, Do, conductivity and all ion concentrations in artifical brine have no the variation as the function ot time within fixed time (about 4hours) after irradiation. These results suggest that oxygen which were generated by the gamma radiolysis of water was incrased Do, ...
*; *; Arai, Hidehiko; Miyata, Teijiro
Gesuido Kyokai-shi, 28(324), p.28 - 39, 1991/00
no abstracts in English
; M.A.Kirk*; R.C.Birtcher*
Journal of Nuclear Materials, 148(1), p.43 - 52, 1987/01
Times Cited Count：13 Percentile：76.66(Materials Science, Multidisciplinary)no abstracts in English
-ray irradiation field for calibrating radiation protection instruments;
Hoken Butsuri, 22, p.31 - 38, 1987/00
no abstracts in English
Kr -rays, (IV); Irradiation experiments using Kr -rays on trichlorofluoromethane in batch and flow systemYamamoto, Tadatoshi;
Journal of Nuclear Science and Technology, 19(11), p.903 - 917, 1982/00
Times Cited Count：2 Percentile：32.89(Nuclear Science & Technology)no abstracts in English
Doke, Tadayoshi*; Kikuchi, Jun*; Kanamori, Masashi;
PNC TN841 81-56, 16 Pages, 1981/06
no abstracts in English
