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Numakura, Masahiko*; Sato, Nobuaki*; Bessada, C.*; Okamoto, Yoshihiro; Akatsuka, Hiroshi*; Nezu, Atsushi*; Shimohara, Yasuaki*; Tajima, Keisuke*; Kawano, Hirokazu*; Nakahagi, Takeshi*; et al.
Progress in Nuclear Energy, 53(7), p.994 - 998, 2011/11
Times Cited Count:13 Percentile:69.42(Nuclear Science & Technology)X-ray absorption fine structure (XAFS) measurements on thorium fluoride in molten lithium-calcium fluoride mixtures and molecular dynamics (MD) simulation of zirconium and yttrium fluoride in molten lithium-calcium fluoride mixtures have been carried out. In the molten state, coordination number of thorium and inter ionic distances between thorium and fluorine in the first neighbor are nearly constant in all mixtures. However the fluctuation factors (Debye-Waller factor and C cumulant) increase until
CaF
= 0.17 and decrease by addition of excess CaF
. It means that the local structure around Th
is disordered until
CaF
=0.17 and stabilized over
CaF
= 0.17. The variation of fluctuation factors is related to the number density of F
in ThF
mixtures and the stability of local structure around Th
increases with decreasing the number density of F
in ThF
mixtures. This tendency is common to those in the ZrF
and YF
mixtures.
Nishiwaki, Yoichi*; Kato, Tetsuya*; Ohara, Yasuaki*; Osawa, Akira*; Todoroki, Norikazu*; Igawa, Naoki; Ishii, Yoshinobu; Iio, Katsunori*
Journal of the Physical Society of Japan, 75(3), p.034707_1 - 034707_8, 2006/03
Times Cited Count:12 Percentile:58.19(Physics, Multidisciplinary)no abstracts in English
Shinohara, Koji; Yoshino, Ryuji; Nazikian, R.*; Fujita, Takaaki; Kishimoto, Yasuaki
Europhysics Conference Abstracts, 23J, p.405 - 408, 1999/00
no abstracts in English
Kaneko, Yoshihiko; Mizumoto, Motoharu; ; Nakahara, Yasuaki; Iwamoto, Akira; Funahashi, Satoru; ; Takeda, Tatsuoki; Hoshi, Michio; Shinohara, Nobuo; et al.
JAERI-M 91-095, 137 Pages, 1991/06
no abstracts in English