Collisions of Protoplanetary Dust Aggregates and the Influence of their Volume Filling Factors

Details Collisions of Protoplanetary Dust Aggregates and the Influence of their Volume Filling Factors Collisions of Protoplanetary Dust Aggregates and the Influence of their Volume Filling Factors

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..217m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.217

Physics

Scientific paper

In laboratory experiments we investigate the growth of dust agglomerates by coagulation. To understand the mechanisms leading to mass accretion, collisions between cm-sized dust agglomerates are studied in dependence on porosity at velocities around the fragmentation threshold. Further collision experiments are performed to study the porosities of protoplanetary dust agglomerates more exactly. With respect to the approximated masses and coupling times of dust aggregates in dusty disks, these investigations are very important for the understanding of coagulation processes.

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