JOPSS - Search Results

Journal Articles

Application of high-energy-resolution X-ray absorption spectroscopy at the U L $_{3}$ -edge to assess the U(V) electronic structure in FeUO $_{4}$

Yomogida, Takumi; Akiyama, Daisuke*; Ouchi, Kazuki; Kumagai, Yuta; Higashi, Kotaro*; Kitatsuji, Yoshihiro; Kirishima, Akira*; Kawamura, Naomi*; Takahashi, Yoshio*

Inorganic Chemistry, 61(50), p.20206 - 20210, 2022/12

https://doi.org/10.1021/acs.inorgchem.2c03208

Times Cited Count：4 Percentile：36.89(Chemistry, Inorganic & Nuclear)

FeUO $_{4}$ was studied to clarify the electronic structure of U(V) in a metal monouranate compound. We obtained the peak splitting of HERFD-XANES spectra utilizing high-energy-resolution fluorescence detection-X-ray absorption near edge structure (HERFD-XANES) spectroscopy at the U L $_{3}$ -edge, which is a novel technique in the U(V) compounds. Theoretical calculations revealed that the peak splitting was caused by splitting the 6d orbital of U(V). Such distinctive electronic states are of major interest to researchers and engineers working in various fields, from fundamental physics to the nuclear industry and environmental sciences for actinide elements.

Journal Articles

Application of diamond to fusion plasma diagnostic

Kusama, Yoshinori; Ishikawa, Masao

NEW DIAMOND, 21(3), p.24 - 25, 2005/07

no abstracts in English

Journal Articles

Proposal for a chopper spectrometer with very high energy resolution

Oyama, Kenji*; Ito, Shinichi*; Otomo, Toshiya*; Osakabe, Toyotaka; Suzuki, Junichi; Matsuda, Masaaki; Kuwahara, Keitaro*; Arai, Masatoshi*

Applied Physics A, 74(Suppl.1), p.S1598 - S1600, 2002/12

https://doi.org/10.1007/s003390201860

Times Cited Count：2 Percentile：11.51(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

First results from the actinide science beamline BL23SU at SPring-8

Saito, Yuji; Nakatani, Takeshi*; Matsushita, Tomohiro*; Agui, Akane; Yoshigoe, Akitaka; Teraoka, Yuden; Yokoya, Akinari

Nuclear Instruments and Methods in Physics Research A, 474(3), p.253 - 258, 2001/12

https://doi.org/10.1016/S0168-9002(01)00883-X

no abstracts in English

Journal Articles

Performance of a very high resolution soft X-ray beamline BL25SU with a twin-helical undulator at SPring-8

Saito, Yuji; Kimura, Hiroaki*; Suzuki, Yoshio*; Nakatani, Takeshi*; Matsushita, Tomohiro*; Muro, Takayuki*; Miyahara, Tsuneaki*; Fujisawa, M.*; Soda, Kazuo*; Ueda, Shigenori*; et al.

Review of Scientific Instruments, 71(9), p.3254 - 3259, 2000/09

https://doi.org/10.1063/1.1287626

Times Cited Count：187 Percentile：98.99(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Terminal voltage control by precision energy analysing slits

Sakai, Takuro; Sato, Takahiro*; Oikawa, Masakazu*; Kamiya, Tomihiro; Uno, Sadanori

Dai-12-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.97 - 99, 1999/07

no abstracts in English

JAEA Reports

Development of Ge ray detector system for radioactivity measurement in deep sea

Yamamoto, Tadatoshi; Shimizu, Toku; Kozawa, Teruo; Birumachi, Atsushi; ; Katagiri, Masaki

JAERI-Research 99-032, 59 Pages, 1999/04

JAERI-Research-99-032.pdf:6.47MB

no abstracts in English

JAEA Reports

Measurement of nuclear data for minor actinides with lead slowing-down spectrometer - III

PNC TJ9604 97-001, 108 Pages, 1997/03

PNC-TJ9604-97-001.pdf:4.05MB

A lead slowing-down spectrometer was installed coupled to the 46 MeV electron linac at Research Reactor Institute, Kyoto university (KURRI). Characteristics of the Kyoto University Lead Slowing-down Spectrometer (KULS) were measured for (1)the relation between neutron slowing-down time t(s) and energy E (keV) (E=190/t $^{2}$ in Bi hole and E=156/ $^{2}$ in Pb hole), (2)energy resolutlon (40 % in Bi and Pb holes), and (3)neutron energy spectrum by the neutron TOF method. The results obtained by the MCNP code were in general agreement with these experimental ones. The KULS has been applied to the fission cross section measurements of Am-241, Am-243 and Am-242m relative to that of U-235 from 0.1 eV to 10 keV, making use of the back-to-back type double fission chambers. For Am-241, Dabbs and ENDF/B-VI data are in good agreement with the present measurement. The JEND L-3.2 data are smaller by a factor of 2 between 10 and 200 eV. The ENDF/B-VI data for Am-243 are lower between 15 and 60 eV, and the JENDL-3.2 are lower in general above 100 eV. It has been found that the preliminary result for the Am-242m(n,f) reaction is close to the ENDF/B-VI and the JENDL-3.2 data. Thermal neutron cross sections for Am-241 and Am-243 have also been measured in a standard Maxwellian distribution spectrum field. Finally, aiming at the measurement of capture cross section for MA nuclides, the experimental investigation for Np-237 sample (2 mg) has been performed with the KULS. Due to the comparable background counts to the foreground ones, the capture events from the sample have scarecely been detected with an Ar-gas proportional counter.