Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Nagaishi, Ryuji; Yamada, Reiji; Kumagai, Yuta; Sugo, Yumi
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 160, 2008/11
no abstracts in English
Sato, Tatsuhiko; Satoh, Daiki; Endo, Akira
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 165, 2008/11
We installed the function for estimating the energy spectrum into our developing dose monitoring system applicable to various radiations. The accuracy of neutron spectrum estimated by this system was well verified in quasi-monoenergetic neutron fields of TIARA whose spectra are generally difficult to be estimated by conventional unfolding techniques.
Satoh, Daiki; Sato, Tatsuhiko; Endo, Akira
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 164, 2008/11
The purpose of this study is to develop a high efficiency neutron-detection system to measure the systematic data of the elastic neutron-scattering cross sections in intermediate energy region. A measurement technique with high neutron-detection efficiency, which is about 10
times higher than that of the conventional detection systems such as proton-recoil counter-telescope, is required to obtain the data. We developed a high efficiency neutron-detection system based on a liquid organic scintillator by coupling with time-of-flight (TOF) technique. By using the system, the elastic neutron-scattering cross section was measured to examine its performance. The experimental data obtained at 15 degree in laboratory frame was compared with the values of evaluated nuclear data ENDF/B VII. The experimental results agreed very well with the evaluated values. This indicates that the measurement and analysis methods are appropriate, and the neutron-detection system developed in the present work is applicable to the measurement of the elastic neutron-scattering cross sections with higher detection efficiency compared with the conventional ones.
Fukaya, Yuki; Hashimoto, Mie; Kawasuso, Atsuo; Ichimiya, Ayahiko
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 154, 2008/11
no abstracts in English
Abe, Hiroshi; Aone, Shigeo*; Uchida, Hirohisa*; Oshima, Takeshi
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 145, 2008/11
no abstracts in English
Mugibayashi, Yasuhiro*; Arimura, Juro*; Uchida, Toshihito*; Machiyama, Tomoaki*; Suzuki, Yoshio*; Seko, Noriaki; Tamada, Masao
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 41, 2008/11
no abstracts in English
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Seko, Noriaki; Tamada, Masao; Sakata, Eiji*
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 42, 2008/11
no abstracts in English
Takigami, Machiko*; Amada, Haruyo*; Nagasawa, Naotsugu; Hiroki, Akihiro; Kasai, Noboru; Yoshii, Fumio; Tamada, Masao
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 44, 2008/11
no abstracts in English
Kasahara, Takamitsu*; Takigami, Machiko*; Nagasawa, Naotsugu; Prawitwong, P.*; Tamada, Masao; Takigami, Shoji*
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 45, 2008/11
Carboxymethyl cellulose (CMC) forms a gel when mixed with acid as a result of replacement of sodium in carboxymethyl group with hydrogen; hydrogen bonds are formed among CMC molecules. CMC gel gets new property by mixing with other materials. Konjac mannan (KM) is a water soluble glucomannan with high molar mass and has high viscosity in low concentration aqueous solution. CMC gel is expected to have more elasticity by mixing with KM. Novel CMC-KM mixture gel is made by two processes; (1) mixing CMC with KM solution, (2) immersion of CMC-KM mixture in hydrochloric acid aqueous solution. Interaction of CMC and KM was studied by using KM with different molar mass. Molar mass of KM easily decreases by 
-irradiation. The effect of KM molar mass on characteristics of CMC-KM mixture is examined using tensile test fixture.
Koshikawa, Hiroshi; Yamaki, Tetsuya; Asano, Masaharu; Yoshida, Masaru; Maekawa, Yasunari
no journal, ,
We previously prepared ETFE-based membranes by -ray irradiation after the radiation grafting of styrene-derivatives for improving the chemical stability. The present study concerns the use of ion beams as a crosslinking tool instead of -rays. The membranes were prepared by the following procedures: pre--irradiation grafting of styrene into ETFE films, post-crosslinking by -irradiation of 1,000 kGy or O-ion irradiation of 6.3 MeV/n (26 kGy as an absorbed dose), and sulfonation. The membranes were measured the change in membrane weight during the course of oxidative degradation in a 3% hydrogen peroxide aqueous solution at 60
C. The degradation onset time was longer for the O ions irradiated membrane than the -irradiated membrane. This means the LET effect on the crosslinking should form multiply crosslinked networks along its latent track, thereby improving the chemical stability of the membranes noticeably.
Onoda, Shinobu; Hirao, Toshio; Oshima, Takeshi; Kaneko, Hirohisa; Sanami, Toshiya*
no journal, ,
no abstracts in English
Yamaguchi, Makoto; Taguchi, Mitsumasa
no journal, ,
no abstracts in English
Yamada, Keisuke; Uno, Sadanori; Chiba, Atsuya; Yokoyama, Akihito; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Okubo, Takeru; Agematsu, Takashi; Mizuhashi, Kiyoshi
no journal, ,
no abstracts in English
Yoshida, Kenichi; Nara, Takayuki; Saito, Yuichi; Yokota, Wataru
no journal, ,
no abstracts in English
-ray irradiation durability of silica based adsorbents for the extraction chromatographySano, Yuichi; Koma, Yoshikazu; Watanabe, So
no journal, ,
The resistances of the R-BTP/SiO
-P and the TODGA/SiO-P adsorbents to -ray irradiation were investigated to evaluate durability of the adsorbents.
Shikaze, Yoshiaki; Tanimura, Yoshihiko; Saegusa, Jun; Tsutsumi, Masahiro; Yoshizawa, Michio; Harano, Hideki*; Matsumoto, Tetsuro*; Kaneko, Hirohisa
no journal, ,
no abstracts in English
Taguchi, Mitsumasa; Kimura, Atsushi; Hirota, Koichi; Kurashima, Satoshi; Sugo, Yumi
no journal, ,
no abstracts in English
-ray irradiated aqueous chlorophenol solutionsTaguchi, Mitsumasa; Kimura, Atsushi; Hirota, Koichi; Otani, Yoshimi*; Shiraishi, Fujio*
no journal, ,
no abstracts in English
Nakagawa, Seiko*; Ota, Nobuaki*; Taguchi, Mitsumasa; Hirota, Koichi
no journal, ,
no abstracts in English
Kondo, Takafumi*; Yang, J.*; Kan, Koichi*; Norizawa, Kimihiro*; Shibata, Hiromi*; Taguchi, Mitsumasa; Kurashima, Satoshi; Hirota, Koichi
no journal, ,
no abstracts in English
