High-Pressure Raman Study of Anthracene
High-Pressure Raman Study of Anthracene
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DOI：
10.1021/jp9838994
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发表时间：
1999-03
影响因子：
2.9
通讯作者：
Liang Zhao;B. Baer;E. Chronister
中科院分区：
文献类型：
--
作者：
Liang Zhao;B. Baer;E. Chronister
已经研究了环境温度下高达 3.1 GPa 的压力引起的晶体蒽的拉曼位移和谱线展宽。使用氮气作为静水压力介质消除了压力引起的缺陷荧光，该荧光缺陷先前限制了蒽的高压拉曼研究。已经确定了六个声子和九个振动子的模式格鲁尼森参数，并且在线宽数据中观察到了先前建议的 2.4 ± 0.2 GPa 相变的一些证据。校准后的压力引起的光谱位移和线宽变化也可以用作激光引起的激波前沿的压力和温度分布的测量（Hambir, S. A.；Franken, J.；Hare, D. E.；Chronister, E. L.；Baer, B. J.；Dlott, D. D. J. Appl. Phys. 1997, 81, 2157）。
Pressure-induced Raman shifts and line broadening in crystalline anthracene have been studied up to 3.1 GPa at ambient temperature. The use of nitrogen as a hydrostatic pressure medium eliminated pressure-induced defect fluorescence that had previously restricted high-pressure Raman studies of anthracene. Mode Gruneisen parameters have been determined for six phonons and nine vibrons, and some evidence for a previously suggested phase transition at 2.4 ± 0.2 GPa is observed in the line width data. The calibrated pressure-induced spectral shifts and line width changes also can be utilized as a gauge of the pressure and temperature profile of a laser-induced shock front (Hambir, S. A.; Franken, J.; Hare, D. E.; Chronister, E. L.; Baer, B. J.; Dlott, D. D. J. Appl. Phys. 1997, 81, 2157).