THE EQUATION-OF-STATES OF JILIN ORDINARY CHONDRITE AND NANDAN IRON METEORITE

Shock wave data for Jilin ordinary chondrite and Nandan iron meteorite are measured by electric-pin techniques on the dynamic high-pressure device equipped with a two-stage light gas gun, and then equation-of-s tates Supposedly fit for describing their P-V-E relations are chosen t o evaluate the values of their parameters. Demonstrated from the compa rison between P-V curves of equation-of-states and experimental data p oints, P-V relation of Jilin ordinary chondrite can be described by th e universal equation-of-state, of which bulk modulus value of zero-pre ssure K-os = 48.10 GPa, its pressure derivative K'(os) = 4.13. That of Nandan iron meteorite can be described by the three-term form of equa tion-of-state, of which the values of two matter parameters Q = 41.235 31 GPa, q = 12.271 79. The Hugoniot data and equation-of-states for J ilin ordinary chondrite and Nandan iron meteorite are first reported i n this paper. The equation-of-state defined by Hugoniot data measureme nt provides strong empirical support for describing the compression of meteorites to high pressure.