High-pressure Brillouin scattering and elastic constants of single-crystal hydrogen to 24 GPa

Conference · Sun Jul 10 00:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6733489

Zha, C; Duffy, T S; Mao, H; Hemley, R J ^[1]

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1. Geophysical Laboratory and Center for High-Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road N.W., Washington DC 20015 (United States)

High-pressure Brillouin spectra of single-crystal hydrogen have been measured to 24 GPa at room temperature in a large conical opening diamond anvil cell. The orientation of the single-crystal was precisely determined at each pressure by synchrotron x-ray diffraction. The results indicate that solid is elastically anisotropic. The orientation dependence of the sound velocities is used to calculate the five elastic constants, bulk modulus, shear modulus, and equation of state. The data are in good agreement with previous equation-of-state data obtained by x-ray diffraction. [copyright] 1994 American Institute of Physics

• OSTI ID: 6733489
• Report Number(s): CONF-921145--
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 309:1; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
360606 -- Other Materials-- Physical Properties-- (1992-)
AMBIENT TEMPERATURE
BRILLOUIN EFFECT
COHERENT SCATTERING
CRYSTALS
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
HYDROGEN
MECHANICAL PROPERTIES
MONOCRYSTALS
NONMETALS
PRESSURE DEPENDENCE
SCATTERING
VERY HIGH PRESSURE