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Collecting cometary dust particles on metal blacks with the COSIMA instrument onboard ROSETTA

Abstract : After a brief review of the instrument development and materials selection for collecting cometary dust in the vicinity of comet 67/P Churyumov-Gerasimenko we focus on laboratory verification for the capability of metal black targets to decelerate and capture dust particles (velocities in the order of 100 m/s; sizes of some 10 mu m). The results indicate that particles between 10 and 100 mu m size can be collected with high probability. Two basic mechanisms of energy dissipation upon impact could be identified: By internal friction within a highly structured dust and within the black's nanostructure. In addition to the actual ROSETTA mission the data presented here might have a more general relevance for future, similar in-situ investigations. (C) 2014 Elsevier Ltd. All rights reserved.
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http://hal.in2p3.fr/in2p3-01101328
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Submitted on : Thursday, January 8, 2015 - 2:14:00 PM
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K. Hornung, J. Kissel, H. Fischer, E.M. Mellado, O. Kulikov, et al.. Collecting cometary dust particles on metal blacks with the COSIMA instrument onboard ROSETTA. Planetary and Space Science, Elsevier, 2014, pp.309-317. ⟨10.1016/j.pss.2014.08.011⟩. ⟨in2p3-01101328⟩

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