IMPULSIVE STIMULATED LIGHT SCATTERING AT HIGH PRESSURE-PRECISE DETERMINATION OF ELASTIC CONSTANTS OF OPAQUE MATERIALS

Abstract

Impulsive stimulated light scattering has been used to measure interfacial wave propagation speeds and elastic constants under conditions of high pressure. Data obtained from single-crystal Ge and Fe, and from polycrystalline Ta is presented. The method is complementary to other techniques for obtaining this type of information. There appears no fundamental reason why it cannot be extended to the I Mbar regime.

Keywords:

• Elastic constants
• Mechanical properties
• Light scattering