Melt droplet formation in energetic impact events

Details Melt droplet formation in energetic impact events Melt droplet formation in energetic impact events

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.350..494m&link_type=abstract

Nature (ISSN 0028-0836), vol. 350, April 11, 1991, p. 494-497.

Mathematics

Logic

41

Drops (Liquids), Impact Damage, Meteoritic Damage, Tektites, Cretaceous-Tertiary Boundary, Melting, Phase Transformations, Spherules, Earth, Impacts, Impact Effects, Melts, Liquid Phase, Size, Velocity, Theoretical Studies, Spherules, Microtektites, Calculations, Formation, Cretaceous-Tertiary Event, Parameters

Scientific paper

It was recently shown that geological materials initially shocked to high pressure approach the liquid-vapor phase boundary from the liquid side as they decompress, breaking up into an expanding spray of liquid droplets. A simple theory is presented here for estimating the sizes of these droplets as a function of impactor size and velocity. It is shown that these sizes are consistent with observations of microtektites and spherules found in the Cretaceous/Tertiary boundary layer.

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