EuroMir '95: First results from the dustwatch-P detectors of the European Space Exposure Facility

Shrine, Nick R.G. and McDonnell, J.A.M. and Burchell, Mark J. and Gardner, David J. and Jolly, Harjinder S. and Ratcliff, P.R. and Thomson, R. (1998) EuroMir '95: First results from the dustwatch-P detectors of the European Space Exposure Facility. Advances in Space Research. . pp. 1481-1484. (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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A small, passive, retrievable dust detector/collector experiment (Dustwatch-P), based on thin foil and aerogel capture cells has been developed at the University of Rent by the Unit for Space Sciences & Astrophysics (USSA). It was mounted in the European Space Exposure Facility (ESEF) designed by the Institut d'Astrophysique Spatial (Orsay, France) and flown on the joint ESA/Russian Space Agency EuroMir '95 mission. The experiment sampled micrometeoroids and space debris in the immediate vicinity of a large space facility (Mit) and offers the opportunity for detailed particle characterisation by intact capture. Dustwatch-P was housed in 2 ESEF cassettes, each contained: 1849mm(2) of aluminium foil capture cells, 2.4 mu m and 5 mu m thick respectively, mounted above a pure copper plate; 8450mm(2) of 12mm thick silica aerogel (density of 0.1g/cm(3) and pore size of approximately 0.07 mu m). 8650mm of experiment-holder surfaces (highly polished 6061-T6 aluminium alloy) were also used for detection. The foils and experiment-holder surfaces readily give a flux measurement for comparison to previous data with chemical classification of any impactor residues. The aerogel was intended to capture, with minimal modification, incident hypervelocity particles. Dustwatch-P was exposed to the space environment when the ESEF cassettes were opened during Mir EVA's on the 20/21 October '95. The cassettes were hermetically sealed in space for return to Earth in February '96. We present the first results of post-flight analysis. A hypervelocity perforation has been found in each foil and a region of ejecta impacts indicating a large impact in the vicinity. This impact rate gives a higher flux than expected, possibly due to a debris cloud. (C) 1997 COSPAR. Published by Elsevier Science Ltd.

Item Type: Article
Additional 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
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: T.J. Sango
Date Deposited: 13 May 2009 06:21
Last Modified: 06 Mar 2015 10:32
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