Particle lifetime studies in LEO for aerocaptured interplanetary dust

McDonnell, J.A.M. and Cook, C.R. (1997) Particle lifetime studies in LEO for aerocaptured interplanetary dust. In: McDonnell, J.A.M. and Spohn, T. and Mohlmann, D. and Klinger, J. and Geophys, European and Space Agcy, European Geophys Soc, eds. Advances in Space Research. Advances in Space Research, 20. Elsevier Science Ltd pp. 1495-1500. ISBN 0-08-043305-7. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Space impacts retrieved to Earth, such as those on LDEF and EuReCa, have led to an unprecedentedly high definition of the impact environment in Earth orbit. This leads to (1) a penetration flux distribution (2) angular dependence of the flux (3) physical signatures of the penetration through thin films and (4) chemical evidence of impact residues. (C) 1997 COSPAR. Published by Elsevier Science Ltd. At micron dimensions, space retrieved surfaces show an "excess" flux, mainly when exposed to the leading (ram) direction, attributable to space debris or to micrometeoroids captured in Earth orbit. We present results of studies to determine the capture efficiency of the Earth to interplanetary dust and the dwell time of microparticles in eccentric orbits. Effects of the solar hour angle of the initial argument of perigee at capture are critical and, especially, the increase or decrease of atmospheric density at subsequent perigee passages due to solar heating cycles. Results will be presented of interest to the relative importance of space debris and of astrophysical sources.

Item Type: Conference or workshop item (Paper)
Additional information: Document Type: Proceedings Paper Conference Information: BO.8, BO.3 and BO.5 Symposium of COSPAR Scientific Commission B on Hypervelocity Impacts in Space and Planetology, at the 31st COSPAR Scientific Assembly Birmingham, England, Jul 14-21, 1996 Special Issue Hypervelocity Impacts in Space and Planetology Comm Space Res; Int Astron Union; Int Union Geodesy & Geophys; European Space Agcy; European Geophys Soc 1997 Published by Elsevier Science Ltd.
Subjects: T Technology
Q Science > QB Astronomy
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: M.A. Ziai
Date Deposited: 19 Apr 2009 19:08
Last Modified: 24 Apr 2014 13:11
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