Computer Science
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icar..142..281w&link_type=abstract
Icarus, Volume 142, Issue Icarus, pp. 281-297.
Computer Science
19
Scientific paper
The PROGRA2 experiment allows measurements under microgravity conditions of polarization phase curves for clouds of dust particles. The sizes that can be used range from a few micrometers to hundreds of micrometers; regular or irregular particles can be tested. Measurements obtained on compact particles of boron carbide and silicon carbide are presented. Results for the silicon carbide, obtained for different values of the number densities of the particles, indicate that values of the polarization maximum are lower when measured under microgravity conditions than on the ground. Although still not fully demonstrated, this result could be used to understand why it has been difficult to correlate measurements of the positive branch of the polarization phase curve done on the ground with actual data on Solar System objects.
Gayet Jean-François
Hadamcik Edith
Levasseur-Regourd Anny-Chantal
Renard Jean-Baptiste
Worms Jean-Claude
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