Mathematics – Logic
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982stin...8322086c&link_type=abstract
Final Report Martin Marietta Corp., Denver, CO. Payloads, Sensors and Instruments Dept.
Mathematics
Logic
Comets, Cosmic Dust, Extraterrestrial Matter, Chemical Analysis, Space Rendezvous, X Ray Diffraction, X Ray Fluorescence
Scientific paper
Distinctions between cometary material and other extraterrestrial materials (meteorite suites and stratospherically-captured cosmic dust) are addressed. The technique of X-ray fluorescence (XRF) for analysis of elemental composition is involved. Concomitant with these investigations, the problem of collecting representative samples of comet dust (for rendezvous missions) was solved, and several related techniques such as mineralogic analysis (X-ray diffraction), direct analysis of the nucleus without docking (electron macroprobe), dust flux rate measurement, and test sample preparation were evaluated. An explicit experiment concept based upon X-ray fluorescence analysis of biased and unbiased sample collections was scoped and proposed for a future rendezvous mission with a short-period comet.
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