Ultrasonic Velocity Measurements In Expanded Liquid Mercury

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概要

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• In this paper we present the first results of the sound velocity measurements in expanded liquid mercury. The measurements were made at temperatures up to 1600℃ and pressures up to 1700kg/cm^2 by means of an ultrasonic pulse transmission/echo technique which was newly developed for such high temperature/pressure condition. When the density is larger than 9g/cm^3,the observed sound velocity decreases linearly with decreasing density. At densities smaller than 9g/cm^3,the linear dependence on the density is no longer observed. The observed sound velocity approaches a minimum near the liquid-gas critical point (ρ_<cr> ≃ 5.5g/cm^3). The existing theories for sound velocity in liquid metals fail to explain the observed results.

• 核融合科学研究所の論文

著者

• SUZUKI K.

  Research Center for Biomedical Engineering, Okayama University

• Inutake M.

  Research Information Center Institute Of Plasma Physics Nagoya University:plasma Research Center Tsu

• Fujiwaka S.

  Research Information Center Institute Of Plasma Physics Nagoya University

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