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Takahashi, Tomoyuki*; Fukaya, Yukiko*; Iimoto, Takeshi*; Uni, Yasuo*; Kato, Tomoko; Sun, S.*; Takeda, Seiji; Nakai, Kunihiro*; Nakabayashi, Ryo*; Uchida, Shigeo*; et al.
Hoken Butsuri (Internet), 56(4), p.288 - 305, 2021/12
We report the results of activities related to the Task Group of Parameters Used in Biospheric Dose Assessment Models for Radioactive Waste Disposal at the Japan Health Physics Society.
Hirayama, Tomoko*; Torii, Takashi*; Konishi, Yohei*; Maeda, Masayuki*; Matsuoka, Takashi*; Inoue, Kazuko*; Hino, Masahiro*; Yamazaki, Dai; Takeda, Masayasu
Nihon Kikai Gakkai Rombunshu, C, 77(779), p.2884 - 2893, 2011/07
Li(
, n)
B reactionIshiyama, Hironobu*; Hashimoto, Takashi; Ishikawa, Tomoko*; Watanabe, Yutaka*; Das, S. K.*; Miyatake, Hiroari; Mizoi, Yutaka*; Fukuda, Tomokazu*; Tanaka, Masahiko*; Fuchi, Yoshihide*; et al.
Physics Letters B, 640(3), p.82 - 85, 2006/09
Times Cited Count：33 Percentile：84.97(Astronomy & Astrophysics)The excitation function of the 
Li(,n)B reaction was measured while identifying the final state event by event in the region of E
= 0.7 - 2.6 MeV using a highly efficient detector system and a low-energy Li beam. The results are much improved both in statistics and precisions, and show smaller cross sections than those of previous measurements by a factor of more than 2 in the low-energy region of E
1.5 MeV. A resonance-like structure is found at around E = 0.85 MeV.
Li(,n)B reaction for astrophysical interestDas, S. K.*; Fukuda, Tomokazu*; Mizoi, Yutaka*; Ishiyama, Hironobu*; Miyatake, Hiroari*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Tanaka, Masahiko*; Yoshikawa, Nobuharu*; Jeong, S.-C.*; et al.
AIP Conference Proceedings 847, p.374 - 376, 2006/07
no abstracts in English
Ishiyama, Hironobu*; Ishikawa, Tomoko*; Hashimoto, Takashi; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Imai, Nobuaki*; Miyatake, Hiroari; Tanaka, Masahiko*; Fuchi, Yoshihide*; Yoshikawa, Nobuharu*; et al.
Nuclear Instruments and Methods in Physics Research A, 560(2), p.366 - 372, 2006/05
Times Cited Count：7 Percentile：47.51(Instruments & Instrumentation)Thanks to the nature of inverse transfer-reactions, low-energy radioactive nuclear beams in light neutron-rich region were produced. The mass-separation and velocity-separation of the JAERI recoil mass-separator help to form high purity beams. The beams of Li, 
B, and 
N-RNBs are utilized to the experiments, so far, with those beam intensities and purities of 1.4
10
pps and 99
, 7.810
pps and 98, and 4.710 pps and 98.5, respectively.
LiJeong, S.-C.*; Katayama, Ichiro*; Kawakami, Hirokane*; Watanabe, Yutaka*; Ishiyama, Hironobu*; Imai, Nobuaki*; Hirayama, Yoshikazu*; Miyatake, Hiroari; Sataka, Masao; Okayasu, Satoru; et al.
Journal of Phase Equilibria and Diffusion, 26(5), p.472 - 476, 2005/09
Authors developed a radiotracer method for diffusion studies in solids. The experimental test was performed by the measurement of the diffusion coefficients of Li in a sample of the compound 
LiAl using an -emitting radiotracer of Li(T
= 0.84 s). It was found that the time-dependent yields of the alpha particles from the diffusing 8Li that was initially implanted in the sample could be used as a measure of the diffusivity of the tracer in a nondestructive way. The method was applied to measure the self-diffusion coefficients of Li in LiGa, and for investigating how the Li diffusion in the Li ionic conductors is affected by the concentration of atomic defects.
,n) reactions on light neutron-rich nuclei using low-energy radioactive nuclear beamsHashimoto, Takashi; Mitsuoka, Shinichi; Ichikawa, Shinichi; Ikezoe, Hiroshi; Miyatake, Hiroari; Ishiyama, Hironobu*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Imai, Nobuaki*; Tanaka, Masahiko*; et al.
no journal, ,
no abstracts in English
Miyatake, Hiroari; Ishiyama, Hironobu*; Watanabe, Yutaka*; Hirayama, Yoshikazu*; Imai, Nobuaki*; Tanaka, Masahiko*; Yoshikawa, Nobuharu*; Jeong, S.-C.*; Fuchi, Yoshihide*; Nomura, Toru*; et al.
no journal, ,
no abstracts in English
Nemoto, Kazuaki*; Hirayama, Tomoko*; Matsuoka, Takashi*; Hattori, Takanori
no journal, ,
no abstracts in English
Takahashi, Ryohei*; Hirayama, Tomoko*; Tamura, Kazushi*; Sato, Nobuhiro*; Sugiyama, Masaaki*; Oba, Yojiro
no journal, ,
Viscosity index improvers (VII) are important additives for lubricants to suppress the temperature dependence of viscosity index. Although the temperature dependence of viscosity index of VII was thought to be related with the temperature dependence of nanostructures, only a few experimental results have been reported so far. Therefore, we performed small-angle X-ray scattering (SAXS) and dynamic light scattering (DLS) to characterize the nanostructures of VII in the lubricant. The results show the change in molecular size with increasing temperature. The relation between the viscosity index and the nanostructures are discussed.
Fukaya, Yukiko*; Sun, S.*; Hirayama, Makoto*; Sugiyama, Takeshi*; Tagami, Keiko*; Kato, Tomoko; Uchida, Shigeo*
no journal, ,
no abstracts in English
Hino, Masahiro*; Adachi, Nozomu*; Todaka, Yoshikazu*; Oba, Yojiro; Oda, Tatsuro*; Mori, Kazuhiro*; Endo, Hitoshi*; Hirayama, Tomoko*
no journal, ,
no abstracts in English
Takahashi, Ryohei*; Hirayama, Tomoko*; Sato, Nobuhiro*; Sugiyama, Masaaki*; Takashima, Yoriyuki*; Nakano, Taeko*; Tamura, Kazushi*; Oba, Yojiro
no journal, ,
no abstracts in English
