Dynamics of Highly Condensed Molecular Solids by Laser-Induced Acoustic Phonon Spectroscopy

通过激光诱导声声子光谱研究高度凝聚分子固体的动力学

• 批准号: 02452036
• 负责人: SHIMIZU Hiroyasu
• 金额: $ 4.35万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452036/
• 关键词: Acoustic Phonon Spectroscopy; Ultrahigh-Pressure Brillouin Scattering; Hydrogen Sulfide; Crystal Growth; Elastic Constant; 6フッ化イオウ; 分子ダイナミクス; エタノ-ル; 硫化カルボニル; ダイヤモンドアンビルセル

High-pressure acoustic Brillouin spectroscopy has been applied to molecular solids hydrogen sulfide (H2S) and carbon dioxide (CO2) at pressures up to 6 GPa and room temperature. The best fit of the angular dependence of Brillouin acoustic velocities between experimental values and calculations based on Every's expression for elastic waves of an arbitrary direction yielded the orientation of H2S and CO2 cubic-phase crystal grown in the diamond-anvil high-pressure cell. In situ determinations of sound velocities, as a function of pressure, could be made for any direction, the refractive index, the density, and the elastic constants.This method provides a mean for the systematic study of elastic properties and phase transitions of condensed gases under ultrahigh pressures.

高压声学布里渊光谱已被应用于分子固体硫化氢（H2S）和二氧化碳（CO2）在压力高达6 GPa和室温。布里渊声速的角度依赖性的最佳拟合的实验值和计算的基础上的任意方向的弹性波的Every的表达式产生的金刚石砧高压细胞中生长的H2S和CO2 α-相晶体的取向。该方法可以在现场测量任意方向的声速、折射率、密度和弹性常数，为系统研究超压下凝聚态气体的弹性性质和相变提供了一种手段。

项目成果

H.Shimizu: "Highーpressure Raman Study of Liquid and Solid Ethanol at Pressures up to 17 GPa" J.Raman Spectroscopy. 21. 703-704 (1990)

H.Shimizu：“压力高达 17 GPa 时液体和固体乙醇的高压拉曼研究”J.Raman Spectroscopy 21. 703-704 (1990)。

H.Shimizu and S.Sasaki: "High-Pressure Raman and Brillouin Scatterings in Hydrogen-Bonded Crystalline H2S" Mol.Cryst. & Liq.Cryst.218. 97-102 (1992)

H.Shimizu 和 S.Sasaki：“氢键结晶 H2S 中的高压拉曼和布里渊散射”Mol.Cryst。

H.Shimizu: "New Development of High-Pressure Brillouin Study for Elastic Properties of Molecular Solid" Jpn.J.Appl.Phys.S32-1. 355-357 (1993)

H.Shimizu：“分子固体弹性特性高压布里渊研究的新进展”Jpn.J.Appl.Phys.S32-1。

S.Sasaki and H.Shimizu: "High-Pressure Raman and Brillouin Studies of Sulfur Hexafluoride up to 10GPa" Recent Trends in High Pressure Research (Proc. XIII AIRAPT Inter. Conf. High Pressure Science and Technology), edited by A.K.Singh, Oxford & IBH Publish

S.Sasaki 和 H.Shimizu：“高达 10GPa 的六氟化硫的高压拉曼和布里渊研究”高压研究的最新趋势（Proc. XIII AIRAPT Inter. Conf. 高压科学与技术），由 A.K.Singh 编辑，

H.Shimizu: "Pressureーinduced Phase transition in solid hydrogen sulfide at 11 GPa" J.Chem.Phys.95. 2036-2040 (1991)

H.Shimizu：“11 GPa 下固体硫化氢中的压力诱导相变”J.Chem.Phys.95（1991）。