Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Kai, Tetsuya; Shinohara, Takenao; Hiroi, Kosuke; Su, Y. H.; Oikawa, Kenichi
Hihakai Kensa, 67(5), p.209 - 216, 2018/05
no abstracts in English
Miyabe, Masabumi; Oba, Masaki; Jung, K.; Iimura, Hideki; Akaoka, Katsuaki; Kato, Masaaki; Otobe, Haruyoshi; Khumaeni, A.*; Wakaida, Ikuo
Spectrochimica Acta, Part B, 134, p.42 - 51, 2017/08
Times Cited Count：30 Percentile：91.46(Spectroscopy)Spectroscopic properties of atomic species of plutonium were investigated by combining laser ablation and resonance absorption techniques for the analysis of a plutonium oxide sample. For 17 transitions of Pu atoms and ions, the absorbance, isotope shift, and hyperfine splitting were determined via Voigt profile fitting of the recorded absorption spectra. Three transitions were selected as candidates for analytical use. Using these transitions, we investigated the analytical performance that was attainable and determined a correlation coefficient R2 between the absorbance and plutonium concentration of 0.9999, a limit of detection of 30-130 ppm, and a relative standard deviation of approximately 6% for an abundance of 
Pu of 2.4%. These results demonstrate that laser ablation absorption spectroscopy is applicable to the remote isotopic analysis of highly radioactive nuclear fuels and waste materials containing multiple actinide elements.
Toh, Yosuke; Ebihara, Mitsuru*; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo
Hosha Kagaku, (33), p.1 - 9, 2016/03
Prompt Gamma-ray Analysis (PGA) uses capture 
rays, which are characteristic of each particular nucleus emitted from a sample while it is being irradiated with neutrons. It has been used as a rapid, nondestructive method for performing both qualitative and quantitative multielemental analysis. Therefore, cosmochemical, environmental, archeological samples and samples from materials science and engineering are analyzed. Although, researchers have endeavored to improve the accuracy and the detection sensitivity in PGA with the coincidence and anti-coincidence methods, further improvements are possible. We developed a new analytical technique (TOF-PGA) that combines Prompt Gamma-ray Analysis (PGA) and time-of-flight elemental analysis (TOF) by using an intense pulsed neutron beam at the Japan Proton Accelerator Research Complex (J-PARC). It allows us to obtain the results from both methods at the same time. Moreover, it can be used to quantify elemental concentrations in the sample, to which neither of these methods can be applied independently, if TOF-PGA is used. TOF-PGA showed high merits, although the capability may differ in terms of the target element and coexisting elements.
Toh, Yosuke; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo; Ebihara, Mitsuru*
Shiki, 28, P. 4, 2015/09
no abstracts in English
Toh, Yosuke; Ebihara, Mitsuru*; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo
Isotope News, (736), p.22 - 26, 2015/08
no abstracts in English
Tsuchiya, Harufumi; Harada, Hideo; Koizumi, Mitsuo; Kitatani, Fumito; Takamine, Jun; Kureta, Masatoshi; Iimura, Hideki; Kimura, Atsushi; Becker, B.*; Kopecky, S.*; et al.
Nuclear Instruments and Methods in Physics Research A, 767, p.364 - 371, 2014/12
Times Cited Count：10 Percentile：60.98(Instruments & Instrumentation)The impact of systematic effects on the areal density derived from a neutron resonance transmission analysis (NRTA) is investigated by measurements at the time-of-flight facility GELINA. The experiments were carried out at a 25 m station using metallic natural Cu discs with different thicknesses. To derive the areal density from a fit to the experimental transmission, the resonance shape analysis code REFIT was used. Large bias effects were observed using recommended resonance parameters. Therefore, neutron resonance parameters, in particular resonance energies and neutron widths, were derived from the transmission data obtained with a 0.25 mm thick Cu metallic sample. These parameters were used to study the impact of the resonance strength and sample thickness, on the accuracy of the areal density derived by NRTA.
Daido, Hiroyuki
Reza Kenkyu, 31(11), p.698 - 706, 2003/11
no abstracts in English
Morimoto, Yuichi*; Ochiai, Kentaro; Maekawa, Fujio; Wada, Masayuki*; Nishitani, Takeo; Takeuchi, Hiroshi
Journal of Nuclear Materials, 307-311(Part2), p.1052 - 1056, 2002/12
Times Cited Count：0 Percentile：0.01(Materials Science, Multidisciplinary)Decay heat is one of the most important factors for the safety aspect of ITER. Especially, prediction of decay heat with uncertainty less than 15% for the three most important materials, i.e., copper, type-316 stainless steel (SS-316) and tungsten, is strongly requested by designers of ITER. To provide experimental decay heat data needed for validation of decay heat calculations for SS316 and copper, an experiment was conducted as the ITER/EDA task T-426. An ITER-like neutron field was constructed, and decay heat source distributions in thick copper and SS316 plates were measured with Whole Energy Absorption Spectrometer. The measured decay heat distributions in the thick sample plates were compared with the predicted values by MCNP calculations. It was found that the use of an effective activation cross section calculated by MCNP was needed to consider the self-shielding effects and, for both cases, MCNP calculations could predict decay heat adequately.
-ray analysis using neutron resonance absorptionMatsue, Hideaki
Bunseki, 2002(11), P. 645, 2002/11
no abstracts in English
Zhidkov, A.*; Sasaki, Akira; Tajima, Toshiki*
Physical Review E, 61(3), p.R2224 - R2227, 2000/03
Times Cited Count：44 Percentile：83.29(Physics, Fluids & Plasmas)no abstracts in English
Zhidkov, A. G.; Sasaki, Akira; Tajima, Toshiki*
Review of Scientific Instruments, 71(2), p.931 - 934, 2000/02
Times Cited Count：9 Percentile：52.82(Instruments & Instrumentation)no abstracts in English
Machida, Masahiko; Koyama, Tomio*; Tachiki, Masashi
Physical Review Letters, 83(22), p.4618 - 4621, 1999/11
Times Cited Count：129 Percentile：94.49(Physics, Multidisciplinary)no abstracts in English
, BaCe
Pr
O, and SrBaPrOHinatsu, Yukio
Journal of Solid State Chemistry, 119, p.405 - 411, 1995/00
Times Cited Count：12 Percentile：48.34(Chemistry, Inorganic & Nuclear)no abstracts in English
MUO
(M=Fe,Co,Ni)Hinatsu, Yukio
Journal of Alloys and Compounds, 215, p.161 - 167, 1994/00
Times Cited Count：9 Percentile：60.03(Chemistry, Physical)no abstracts in English
in BaCeOHinatsu, Yukio; Edelstein, N.*
Journal of Solid State Chemistry, 112, p.53 - 57, 1994/00
Times Cited Count：46 Percentile：89.26(Chemistry, Inorganic & Nuclear)no abstracts in English
Hinatsu, Yukio
Nihon Genshiryoku Gakkai-Shi, 36(8), p.714 - 726, 1994/00
Times Cited Count：1 Percentile：17.88(Nuclear Science & Technology)no abstracts in English
C.Ertek*; Oigawa, Hiroyuki
Proceedings of 8th ASTM-EURATOM Symposium on Reactor Dosimetry (ASTM STP 1228), p.187 - 193, 1994/00
no abstracts in English
Hinatsu, Yukio
Nihon Genshiryoku Gakkai-Shi, 35(8), p.701 - 717, 1993/08
Times Cited Count：0 Percentile：3.85(Nuclear Science & Technology)no abstracts in English
, BaPrO and BaTbOHinatsu, Yukio
Journal of Alloys and Compounds, 193, p.113 - 115, 1993/00
Times Cited Count：14 Percentile：72.81(Chemistry, Physical)no abstracts in English
