Physical-mechanical properties of matrices on the comet nuclei surface models

Details Physical-mechanical properties of matrices on the comet nuclei surface models Physical-mechanical properties of matrices on the comet nuclei surface models

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.278..713i&link_type=abstract

In ESA, Proceedings of the International Symposium on the Diversity and Similarity of Comets p 713-716 (SEE N88-21884 14-91)

Physics

Comet Nuclei, Matrix Materials, Surface Properties, Ice, Porous Materials, Space Environment Simulation

Scientific paper

By the method of laboratory modeling, physical-mechanical properties of dust matrices (from SiO2, C) and organic matrices (from DL-alanine, DL-treonine, L-valine) were studied. In most cases the matrices are very porous (0.6 to 0.9), have low density (10 to 50 kg/cu m) and mechanical strength 5000 to 50,000 Pa. Under experimental conditions similar to the position of a comet nucleus at 1 AU from the Sun, matrices some millimeters thick are produced at a rate of 8 times 10 to the minus 8th power/m/sec on the surface of H2O ice.

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