Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p43a1664d&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P43A-1664
Physics
[6015] Planetary Sciences: Comets And Small Bodies / Dust
Scientific paper
The generation of secondary ejecta particles from hypervelocity dust impacts on solid surfaces depend on the impact velocity, mass, and composition. Secondary ejection processes contribute to the development of planetary rings and dusty exospheres of airless bodies throughout the solar system. The parameters of the process, including the yield, the velocities, mass and angular distributions of the ejecta particles, remain poorly characterized. The dust accelerator at the Colorado Center for Lunar Dust and Atmospheric Studies (CCLDAS), University of Colorado, Boulder, is a recently commissioned facility that can provide the means of investigating secondary ejecta generation. A set-up is under development to measure the properties of both the primary and ejecta particles. Following the impact, the ejecta particles will be characterized using the impact light flash phenomena: the generation of light upon impact. The timing and the intensity of the impact will provide the velocity and the mass of the ejecta. The preliminary results of the experiments will be presented.
Auer Stefan
Collette A.
Drake K. J.
Gruen Eberhard
Horanyi Mihaly
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