Shock compression of molten silicate - Results for a model basaltic composition

Details Shock compression of molten silicate - Results for a model basaltic composition Shock compression of molten silicate - Results for a model basaltic composition

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93..367r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Jan. 10, 1988, p. 367-382.

Physics

59

Basalt, Equations Of State, Planetary Composition, Shock Loads, Silicates, Liquid Phases, Planetary Evolution, Streak Cameras, X Ray Imagery

Scientific paper

A technique is described for measuring the shock wave pressure-density equation of state of molten silicates at temperatures of up to about 2000 K. Modifications to the standard equation of state experiments include the design of a molybdenum sample container for the molten silicate, the use of a 10-kW radio frequency induction heater to melt the sample prior to impact, and the use of shuttering systems to prevent preexposure of the film in the rotating mirror. Results suggest that structural rearrangements take place gradually in response to pressure in the 0-25 GPa pressure range, and that the gradual structural changes characteristic of the lower-pressure regime are essentially complete by about 25 GPa.

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