TIME-RESOLVED RAMAN MEASUREMENTS IN ALPHA-QUARTZ SHOCKED TO 60 KBAR

被引：20

作者：

GUSTAVSEN, RL ^{[1
]}

GUPTA, YM ^{[1
]}

机构：

[1] WASHINGTON STATE UNIV,DEPT PHYS,SHOCK DYNAM LAB,PULLMAN,WA 99164

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 06期

关键词：

D O I：

10.1063/1.356176

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An experimental method for obtaining time resolved Raman spectra in shock wave experiments is described. A key aspect of this method is the use of optical fibers to transmit light from a pulsed laser to the sample and to transmit the scattered light to the recording equipment. Using this method we have measured changes in the A1(466 cm-1) Raman line of alpha-quartz shocked along the z axis to 60 kbar. For the same density compression, the line shifts under shock loading are considerably larger than under hydrostatic loading. Because shifts of the A1(466 cm-1) line in quartz are correlated with changes in the Si-O-Si bond angle, which, in turn, is the primary compression mechanism in quartz, the present results indicate the role of nonhydrostatic stresses on compression at the molecular level.

引用

页码：2837 / 2844

页数：8

共 33 条

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