Theory of shock-wave ionization upon high-velocity impact of micrometeorites

Details Theory of shock-wave ionization upon high-velocity impact of micrometeorites Theory of shock-wave ionization upon high-velocity impact of micrometeorites

Jun 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974znata..29..870d&link_type=abstract

Zeitschrift für Naturforschung, Teil a, vol. 29a, June 1974, p. 870-879.

Physics

17

Impact Loads, Ion Production Rates, Iron Meteorites, Micrometeoroids, Shock Heating, Propagation Velocity, Shock Fronts, Shock Wave Propagation, Tungsten

Scientific paper

The relevant processes in shock wave ionization of a solid Fe micrometeorite impinging on a W target are analyzed. The internal energy behind the shock wave is shown to depend on impact velocity w, target and meteorite density in a simple analytical form. For low impact velocities the ions generated by the shock are mostly due to surface ionization. For high impact velocities the number of ions can satisfactorily be explained by isentropic expansion of the shocked material whereupon the rate processes in the expanding ion cloudlet govern the residual ionization. In velocity regions where laboratory measurements can be carried out, the agreement between theory and experiment confirms the assumptions made.

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