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Title: Sound velocity on SiO/sub 2/ hugoniots

Conference ·
OSTI ID:7300855

Measurements of release velocities in various samples of SiO/sub 2/ shocked into the pressure range of 47-67 GPa are reported. The first direct observation of a longitudinal release wave in SiO/sub 2/ at these high pressures is reported. The resulting sound speed data along the Hugoniot, combined with the Hugoniot, permit a calculation of the Gruneisen parameter along the Hugoniot. Because the pressure-temperature region of the experiments approximates middle mantle conditions, the longitudinal and bulk velocity measurements for SiO/sub 2/ have immediate implications for composition constraints to fit seismic profiles of sound velocities. (GHT)

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
7300855
Report Number(s):
LA-UR-77-1527; CONF-770706-22
Resource Relation:
Conference: 6. AIRAPT international high-pressure conference, Boulder, CO, USA, 25 Jul 1977
Country of Publication:
United States
Language:
English