Natural and simulated hypervelocity impacts into solar cells

Graham, Giles A. and Kearsley, Anton T. and Grady, Monica M. and Wright, Ian P. and Herbert, M.K. and McDonnell, J.A.M. (1999) Natural and simulated hypervelocity impacts into solar cells. In: 6th Symposium on Hypervelocity Impact (HVIS 98), Nov 17-19, 1998, Huntsville, Alabama. (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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The solar array which was returned to Earth from the Hubble Space Telescope (HST) in 1993, after 3.62 years of space exposure in low Earth orbit (LEO), has offered the opportunity to document populations of natural micrometeoroids and artificial "space debris". Residues from the hypervelocity impact (HVI) of material deposited in 25 individual solar cells from the array have been investigated herein by scanning electron microscopy. The observations have been compared with the results of simulated HVIs into solar cells using known meteorite mineralogies. This has permitted assessment of the probability of retention for residue materials derived from HVI by well-characterised mineral species. The simulation experiments have thus far suggested that some of the textural features observed in impact residues are dependent on the nature of the individual mineral components within the original impactor. Furthermore it transpires that compounds containing volatile elements, such as Ca (from calcium carbonate), can be preserved as near-intact fragments explosively emplaced in an impact crater. Such unusual particles should not always be dismissed as simply contamination products if observed in LEG-derived HVIs.

Item Type: Conference or workshop item (Paper)
Additional information: Volume 23, Issue 1, Part 1, December 1999, Pages 319-330
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: I.T. Ekpo
Date Deposited: 22 Jun 2009 07:54
Last Modified: 21 May 2014 09:27
Resource URI: (The current URI for this page, for reference purposes)
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