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Yoneda, Yasuhiro; Tsuji, Takuya; Matsumura, Daiju; Okamoto, Yoshihiro; Takaki, Seiya; Takano, Masahide
Physica B; Condensed Matter, 663, p.414960_1 - 414960_9, 2023/08
Times Cited Count：0 Percentile：0.00(Physics, Condensed Matter)We performed various synchrotron X-ray measurements to extract local and average structures of DyN-ZrN solid solutions. We performed the nanoscale structural analysis by combining X-ray absorption fine structure and high-energy X-ray diffraction. The DyN-ZrN solid solution has a rock-salt type cubic crystal structure, and there are instabilities such as the chemical order of the metal site and the distribution of the bond length of the nitrogen site.
Ouchi, Kazuki; Matsumura, Daiju; Tsuji, Takuya; Kobayashi, Toru; Otobe, Haruyoshi; Kitatsuji, Yoshihiro
RSC Advances (Internet), 13(24), p.16321 - 16326, 2023/05
Times Cited Count：1 Percentile：7.66(Chemistry, Multidisciplinary)We clarified the chemical state transformation of deposits following the reduction of uranyl ion (U
O
) from the results of electrochemical quartz crystal microbalance, impedance spectra and X-ray absorption fine structure measurements. We propose the following deposition mechanism: (1) U
is formed by the disproportionation of U
. (2) U forms U hydroxide deposits, and (3) finally, the hydroxide deposits transform into U oxide, generally having a larger electrical resistance than the former.
Miyazaki, Tsukasa*; Miyata, Noboru*; Arima, Hiroshi*; Kira, Hiroshi*; Ouchi, Keiichi*; Kasai, Satoshi*; Tsumura, Yoshihiro*; Aoki, Hiroyuki
Langmuir, 37(32), p.9873 - 9882, 2021/08
Times Cited Count：7 Percentile：32.41(Chemistry, Multidisciplinary)Sekine, Yurina; Nankawa, Takuya; Yamada, Teppei*; Matsumura, Daiju; Nemoto, Yoshihiro*; Takeguchi, Masaki*; Sugita, Tsuyoshi; Shimoyama, Iwao; Kozai, Naofumi; Morooka, Satoshi
Journal of Environmental Chemical Engineering, 9(2), p.105114_1 - 105114_12, 2021/04
Times Cited Count：13 Percentile：43.80(Engineering, Environmental)Remediating toxic ion contamination is crucial for protecting human health and the environment. This study aimed to provide a powerful strategy for effectively utilizing bone waste from the food production and preparation industries for removal of toxic ions. Here, we show that immersing pig bone in NaHCO
solution produced a carbonated nanohydroxyapatites (C-NHAP). The C-NHAP exhibited high adsorptivity for Sr, Cd, Pb, and Cu. The strontium adsorptivity was about 250 and 4,500 times higher than that of normal bone and synthetic HAP, respectively. The C-NHAP is an eco-friendly, high-performance material that is simple to prepare and should be useful for tackling problems of food waste disposal and environmental pollution.
Hosoya, Yoshihiro*; Matsumura, Yuta*; Tomota, Yo*; Onuki, Yusuke*; Harjo, S.
ISIJ International, 60(9), p.2097 - 2106, 2020/09
Times Cited Count：9 Percentile：37.59(Metallurgy & Metallurgical Engineering)Miyazaki, Tsukasa*; Miyata, Noboru*; Yoshida, Tessei*; Arima, Hiroshi*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; et al.
Langmuir, 36(13), p.3415 - 3424, 2020/04
Times Cited Count：19 Percentile：59.57(Chemistry, Multidisciplinary)Hosoya, Yoshihiro*; Matsumura, Yuta*; Tomota, Yo*; Onuki, Yusuke*; Harjo, S.
Tetsu To Hagane, 106(3), p.154 - 164, 2020/03
Times Cited Count：3 Percentile：12.74(Metallurgy & Metallurgical Engineering)Miyazaki, Tsukasa*; Miyata, Noboru*; Asada, Mitsunori*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; Tanaka, Keiji*
Langmuir, 35(34), p.11099 - 11107, 2019/08
Times Cited Count：27 Percentile：66.79(Chemistry, Multidisciplinary)
ZyN surrogate materials for fast reactor nitride fuelYoneda, 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 Dy
Zr
N 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.
C
ion beam irradiation in chrysanthemumMatsumura, Atsushi*; Nomizu, Toshikazu*; Furutani, Noriyuki*; Hayashi, Ken*; Minamiyama, Yasuhiro*; Hase, Yoshihiro
Scientia Horticulturae, 123(4), p.558 - 561, 2010/02
Times Cited Count：33 Percentile：77.98(Horticulture)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
Times Cited Count：7 Percentile：43.58(Nuclear Science & Technology)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.
Furutani, Noriyuki*; Matsumura, Atsushi*; Hase, Yoshihiro; Yoshihara, Ryohei; Narumi, Issei
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 69, 2008/11
no abstracts in English
Matsumura, Atsushi*; Furutani, Noriyuki*; Hase, Yoshihiro; Yokota, Yuichiro; Tanaka, Atsushi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 78, 2008/03
no abstracts in English
(
,
)
and (,)
reactions for 
=1.5-2.4 GeVZegers, R. G. T.*; Sumihama, Mizuki*; Ahn, D. S.*; Ahn, J. K.*; Akimune, Hidetoshi*; Asano, Yoshihiro; Chang, W. C.*; Dat
, S.*; Ejiri, Hiroyasu*; Fujimura, Hisako*; et al.
Physical Review Letters, 91(9), p.092001_1 - 092001_4, 2003/08
Times Cited Count：128 Percentile：94.53(Physics, Multidisciplinary)no abstracts in English
= +1 Baryon resonance in photoproduction from the neutronNakano, 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
Times Cited Count：1024 Percentile：99.84(Physics, Multidisciplinary)no abstracts in English
Asano, Yoshihiro; Matsumura, Toru; Chiba, R.*; Hashimoto, Tomoyuki*; Miura, Akio*; Shimizu, Hajime*; Tajima, Yasuhisa*; Yoshida, Hiroshi*
Nuclear Instruments and Methods in Physics Research A, 451(2), p.658 - 696, 2000/11
no abstracts in English
Ouchi, Kazuki; Matsumura, Daiju; Tsuji, Takuya; Kobayashi, Toru; Otobe, Haruyoshi; Kitatsuji, Yoshihiro
no journal, ,
We analyzed electrodeposited U compounds by X-ray absorption fine structure (XAFS) and impedance spectra measurements. The XAFS spectrum of the deposits was similar to that of U(IV) hydroxide formed by neutralizing U(IV) ion. The electrical resistances obtained from the impedance spectra of U deposits at 4 to 80 minutes after stopping electrodeposition were increased with time. These results indicate that U deposits forms U(IV) hydroxide as an intermediate and finally transforms into U(IV) oxide having generally a larger electrical resistance than a hydroxide.
Okamoto, Yoshihiro; Nagai, Takayuki; Tsuji, Takuya; Matsumura, Daiju
no journal, ,
Some elements such as chromium, iron, rhodium and cerium have multiple valence in the silicate glass. Among them, iron and cerium are known to show a strong mutual correlation in redox behavior. It is reported that Fe (II) is oxidized by Ce (IV) to produce Ce (III) and Fe (III), resulting in the formation of Ce (III) -O-Fe (III) complex in the silicate glass. It is natural to think that if the valence of a constituent element changes in glass, the local structure around that element also changes. In this study, XAFS analysis of Fe and Ce elements was carried out when the Fe content in borosilicate glass was changed, and the changes in the chemical state and local structure were investigated. It was found that by adding Fe, tetravalent Ce (IV) was reduced and the proportion of trivalent Ce (III) increased, and the local structure around Ce also changed accordingly. It was found that Ce was dispersed in the glass phase regardless of whether it was trivalent or tetravalent. However, when Ce was tetravalent, the structural order of the Ce-O pair was as high as that of crystalline CeO
.
Okamoto, Yoshihiro; Nagai, Takayuki; Motokawa, Ryuhei; Kaneko, Koji; Oba, Yojiro; Shobu, Takahisa; Tominaga, Aki; Tanida, Hajime; Matsumura, Daiju; Tsuji, Takuya; et al.
no journal, ,
In order to evaluate the integrity of simulated nuclear waste glass samples, a multi-scale structural analysis system has been established, covering the range from local structure to implementation scale. Synchrotron radiation XAFS was used to investigate the local structure. Since XAFS has excellent elemental selectivity, it is useful for the analysis of waste components in the glass samples which are multi-component systems. In the short range structure, we prepared glass samples with substituted boron isotopes for neutron diffraction experiments and succeeded in obtaining diffraction data with high boron fraction for the first time. In the medium range structure, the influence of platinum group elements was evaluated by PDF analysis. Small-angle scattering experiments provided insight into the phase separation of borosilicate glasses. In addition, we attempted to apply stress-strain analysis to glass samples as structural information on the implementation scale. Through these structural analyses, we will evaluate the structural integrity of the modified glass samples being developed under the contract with the Agency for Natural Resources and Energy.
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 [Mo
O
(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 [Mo
O
(HO)
]
with the aid of X-ray absorption spectroscopy.
