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Modelling of an asteroid photoelectron sheath and implications for a sample return mission

Abstract:

Electrostatic forces from asteroidal photoelectron emission both redistribute regolith and modulate the surface particle size distribution. A 2D particle-in-cell code has been developed to investigate the possibility of direct measurement of the electrical environment near the surface of an asteroid during a sample return mission. The spacecraft is expected to reach equilibrium with the surface photoelectron layer in ≲1ms, which is rapid compared to the descent timescale, permitting the simul...

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Publication status:
Published

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Publisher copy:
10.1016/j.pss.2014.04.018

Authors


Macfaden, AJ More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Atmos Ocean and Planet Physics
Publisher:
Elsevier Ltd
Journal:
PLANETARY AND SPACE SCIENCE
Volume:
99
Pages:
103-111
Publication date:
2014-09-05
DOI:
ISSN:
0032-0633
URN:
uuid:a40e5475-bd6a-4fb9-a442-89e08de72a56
Source identifiers:
476973
Local pid:
pubs:476973

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