Layered structure in the crystalline adsorption layer and the leaching process of poly(vinyl alcohol) revealed by neutron reflectivity

Miyazaki, Tsukasa*; Miyata, Noboru*; Arima, Hiroshi*; Kira, Hiroshi*; Ouchi, Keiichi*; Kasai, Satoshi*; Tsumura, Yoshihiro*; Aoki, Hiroyuki

Langmuir, 37(32), p.9873 - 9882, 2021/08

https://doi.org/10.1021/acs.langmuir.1c01563

Mechanism of improved ductility of 1500 MPa-class ultra-high strength cold-rolled steel sheet produced by rolling and partitioning method

Hosoya, Yoshihiro*; Matsumura, Yuta*; Tomota, Yo*; Onuki, Yusuke*; Harjo, S.

ISIJ International, 60(9), p.2097 - 2106, 2020/09

https://doi.org/10.2355/isijinternational.ISIJINT-2020-027

Mechanism of improved ductility of 1,500 MPa-class ultra-high strength cold-rolled steel sheet produced by rolling and partitioning method

Hosoya, Yoshihiro*; Matsumura, Yuta*; Tomota, Yo*; Onuki, Yusuke*; Harjo, S.

Tetsu To Hagane, 106(3), p.154 - 164, 2020/03

https://doi.org/10.2355/tetsutohagane.TETSU-2019-083

Local structure analysis of ZrN, and DyZyN surrogate materials for fast reactor nitride fuel

Yoneda, Yasuhiro; Tsuji, Takuya; Matsumura, Daiju; Okamoto, Yoshihiro; Takaki, Seiya; Takano, Masahide

Transactions of the Materials Research Society of Japan, 42(2), p.23 - 26, 2017/04

ZnN is a possible candidate for the diluent material for nitride fuels containing transuranium elements. Pellets of inert matrix material ZrN, and surrogate nitride fuel material DyZrN, are fabricated for the purpose of investigating the crystal structure. Lattice parameters of DyZrN followed the Vegard's low, in spite of the large lattice mismatch ( 7%) between DyN and ZrN. Local structure analysis was performed by X-ray absorption fine structure (XAFS) and atomic pair-distribution function (PDF) methods. The Zr-N nearest neighbor bond distance changed as changing the Dy composition. The complex local structure of DyN and ZrN is related to the preferable effects of ZrN.

Experimental studies of shielding and irradiation effects at high energy accelerator facilities

Nakashima, Hiroshi; Sakamoto, Yukio; Iwamoto, Yosuke; Matsuda, Norihiro; Kasugai, Yoshimi; Nakane, Yoshihiro; Masukawa, Fumihiro; Mokhov, N.*; Leveling, A.*; Boehnlein, D.*; et al.

Nuclear Technology, 168(2), p.482 - 486, 2009/11

BB2007-3640.pdf:0.22MB

https://doi.org/10.13182/NT09-A9229

Experimental studies of shielding and radiation effects have been started using 120-GeV proton synchrotron at Fermi National Accelerator Laboratory (FNAL) under collaboration between FNAL and Japan. The first campaign of the experiment was carried out at the Pbar target station and Numi experimental station at FNAL, using antiproton and neutrino production targets irradiated by 120-GeV protons. The generated secondary particles passing through steel, concrete and rock were measured by activation methods as well as by other detectors such as scintillator with a veto counter, phoswich detector and a Bonner ball counter on trial. Preliminary experimental results are presented.

Dose response and mutation induction by ion beam irradiation in chrysanthemum

Matsumura, Atsushi*; Furutani, Noriyuki*; Hase, Yoshihiro; Yokota, Yuichiro; Tanaka, Atsushi

JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 78, 2008/03

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2007-060.pdf

no abstracts in English

Evidence for a narrow = +1 Baryon resonance in photoproduction from the neutron

Nakano, Takashi*; Ahn, D. S.*; Ahn, J. K.*; Akimune, Hidetoshi*; Asano, Yoshihiro; Chang, W. C.*; Date, S.*; Ejiri, Hiroyasu*; Fujimura, Hisako*; Fujiwara, Mamoru; et al.

Physical Review Letters, 91(1), p.012002_1 - 012002_4, 2003/07

https://doi.org/10.1103/PhysRevLett.91.012002

no abstracts in English

New cross-over project study, 7; Study on swift heavy ion-irradiation effects of simulation material of nuclear fuel "CeO" by means of synchrotron radiation

Ono, Hirotaka*; Maeda, Nobuhiro*; Nakagawa, Sho*; Zushi, Yoshihiro*; Iwase, Akihiro*; Baba, Yuji; Hirao, Norie*; Ishikawa, Norito; Chimi, Yasuhiro; Sataka, Masao; et al.

no journal, , 

X-ray absorption spectroscopy is applied for evaluation of heavy ion irradiation effects in sim-fuel CeO in order to investigate the radiation damage of nuclear fuels bombarded by fission fragments. It is found that oxygen atoms are displaced via elastic displacement process, and the charge state of Ce changes from 4+ to 3+.

Aiming to Fukushima environmental recovery; Elucidation of the Cs desorption mechanism and development of the Cs desorption method for waste volume reduction

Shiwaku, Hideaki; Yaita, Tsuyoshi; Suzuki, Shinichi; Kobayashi, Toru; Miyazaki, Yuji; Awual, M. R.; Motokawa, Ryuhei; Okamoto, Yoshihiro; Matsumura, Daiju; Yoshii, Kenji; et al.

no journal, , 

no abstracts in English

Laser Raman spectroscopic studies on isoploymolybdate(VI) in a highly acidic solution

Saeki, Morihisa*; Yomogida, Takumi; Matsumura, Daiju; Saito, Takumi*; Okamoto, Yoshihiro; Oba, Hironori*

no journal, , 

The structures of isoploymolybdate(VI) were investigated by using laser Raman spectroscopy. The assignment of the Raman spectra showed presence of the [MoO(HO)] in the 0.2 M HNO and the [MoO(HO)] in the 1.0 M HNO. To extract the spectrum of the intermediate species, we applied chemometrics analysis to a series of the observed spectra. The analysis revealed presence of one intermediate [Mo(VI)O] species in the 0.5 M HNO. The intermediate species were assigned to [MoO(HO)] with the aid of X-ray absorption spectroscopy.