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Journal Articles

Visualization technique with the energy-resolved neutron imaging system, RADEN

Kai, Tetsuya; Shinohara, Takenao; Hiroi, Kosuke; Su, Y.; Oikawa, Kenichi

Hihakai Kensa, 67(5), p.209 - 216, 2018/05

no abstracts in English

Journal Articles

Laser ablation absorption spectroscopy for isotopic analysis of plutonium; Spectroscopic properties and analytical performance

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:13 Percentile:13.95(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 $$^{240}$$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.

Journal Articles

Development of Prompt Gamma-ray Analysis at J-PARC/ANNRI

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 $$gamma$$ 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.

Journal Articles

Development of elemental analytical methods in BL04 ANNRI

Toh, Yosuke; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo; Ebihara, Mitsuru*

Shiki, 28, P. 4, 2015/09

no abstracts in English

Journal Articles

Development of new non-destructive analysis by using an intense pulsed neutron beam

Toh, Yosuke; Ebihara, Mitsuru*; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo

Isotope News, (736), p.22 - 26, 2015/08

no abstracts in English

Journal Articles

Impact of systematic effects on results of neutron resonance transmission analysis

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:8 Percentile:34.41(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.

Journal Articles

Ultra-short ultra-high intensity laser-matter interaction

Daido, Hiroyuki

Reza Kenkyu, 31(11), p.698 - 706, 2003/11

no abstracts in English

Journal Articles

Decay heat measurement of fusion related materials in an ITER-like neutron field

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:100

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.

Journal Articles

New prompt $$gamma$$-ray analysis using neutron resonance absorption

Matsue, Hideaki

Bunseki, 2002(11), P. 645, 2002/11

no abstracts in English

Journal Articles

Emission of MeV multiple-charged ions from a metallic foils irradiated with an ultrashort laser pulse

Zhidkov, A.*; Sasaki, Akira; Tajima, Toshiki*

Physical Review E, 61(3), p.R2224 - R2227, 2000/03

 Times Cited Count:43 Percentile:15.18(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Energetic-multiple-charged-ion sources on short-laser-pulse irradiated foils

Zhidkov, A. G.; Sasaki, Akira; Tajima, Toshiki*

Review of Scientific Instruments, 71(2), p.931 - 934, 2000/02

 Times Cited Count:9 Percentile:45.6(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Dynamical breaking of charge neutrality in intrinsic Josephson junctions; Common origin for microwave resonant absorptions and multiple-branch structures in I-V characteristics

Machida, Masahiko; Koyama, Tomio*; Tachiki, Masashi

Physical Review Letters, 83(22), p.4618 - 4621, 1999/11

 Times Cited Count:119 Percentile:5.39(Physics, Multidisciplinary)

no abstracts in English

JAEA Reports

None

Takano, Hideki*; *

PNC-TJ9500 98-002, 126 Pages, 1998/03

PNC-TJ9500-98-002.pdf:2.51MB

None

Journal Articles

Magnetic properties of tetravalent praseodymium perovskites BaPrO$$_{3}$$, BaCe$$_{y}$$Pr$$_{1-y}$$O$$_{3}$$, and Sr$$_{y}$$Ba$$_{1-y}$$PrO$$_{3}$$

Hinatsu, Yukio

Journal of Solid State Chemistry, 119, p.405 - 411, 1995/00

 Times Cited Count:11 Percentile:52.86(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Magnetic properties of ordered perovskites Ba$$_{2}$$MUO$$_{6}$$(M=Fe,Co,Ni)

Hinatsu, Yukio

Journal of Alloys and Compounds, 215, p.161 - 167, 1994/00

 Times Cited Count:8 Percentile:41.4(Chemistry, Physical)

no abstracts in English

Journal Articles

Electron paramagnetic resonance spectrum of Pr$$^{4+}$$ in BaCeO$$_{3}$$

Hinatsu, Yukio; Edelstein, N.*

Journal of Solid State Chemistry, 112, p.53 - 57, 1994/00

 Times Cited Count:43 Percentile:11.77(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Magnetic properties of uranium complex oxides

Hinatsu, Yukio

Nippon Genshiryoku Gakkai-Shi, 36(8), p.714 - 726, 1994/00

 Times Cited Count:1 Percentile:81.73(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Mono-energetic mono-directional resonance neutron activation of natural indium metal target

C.Ertek*; Oigawa, Hiroyuki

Proceedings of 8th ASTM-EURATOM Symposium on Reactor Dosimetry (ASTM STP 1228), 0, p.187 - 193, 1994/00

no abstracts in English

Journal Articles

Magnetic Properties of actinide ions and compounds

Hinatsu, Yukio

Nippon Genshiryoku Gakkai-Shi, 35(8), p.701 - 717, 1993/08

 Times Cited Count:0 Percentile:100(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Magnetic studies on BaUO$$_{3}$$, BaPrO$$_{3}$$ and BaTbO$$_{3}$$

Hinatsu, Yukio

Journal of Alloys and Compounds, 193, p.113 - 115, 1993/00

 Times Cited Count:9 Percentile:35.88(Chemistry, Physical)

no abstracts in English

35 (Records 1-20 displayed on this page)