Shock temperatures in anorthite glass

Details Shock temperatures in anorthite glass Shock temperatures in anorthite glass

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986geoj...84..475b&link_type=abstract

Geophysical Journal (ISSN 0016-8009), vol. 84, March 1986, p. 475-489.

Physics

14

Glass, Hugoniot Equation Of State, Phase Transformations, Planetary Composition, Shock Heating, Anorthosite, Cosmochemistry, Optical Pyrometers, Thermal Radiation

Scientific paper

Shock-temperature data and the high-pressure thermal behavior of anorthite glass are examined. Temperatures of anorthite glass shocked to pressures between 48-117 GPa were measured in the temperature range 2500-5600 K using optical pyrometry techniques. The time dependence observed in the emitted light of the glass is analyzed in terms of temperature dependence, emissivity dependences, and the time dependence of absorption or scattering of an intervening layer. The three phase transitions at pressures of about 55, 85, and 100 GPa and with transition energies of about 0.5 MJ/kg are studied.

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