著者

乾 雅祝 石川 大介 田村 剛三郎

出版者

日本高圧力学会

雑誌

高圧力の科学と技術 (ISSN:0917639X)

巻号頁・発行日

vol.18, no.4, pp.321-327, 2008-11-20 (Released:2009-01-09)

参考文献数

28

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We have carried out x-ray diffraction, small-angle x-ray scattering and high-resolution inelastic x-ray scattering measurements for supercritical fluid Hg accompanying the metal-nonmetal (M-NM) transition using synchrotron radiation at SPring-8. In these structural studies we have found an increase in the short-range correlation length and the dynamical sound velocity much faster than the adiabatic sound velocity in the M-NM transition region. These findings strongly suggest the existence of a peculiar fluctuation intrinsic to the M-NM transition in the fluid, which may reflect a first-order M-NM transition predicted by Landau, the winner of the Nobel Prize in physics.