Statistics – Applications
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..307g&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 4, p. 307-319.
Statistics
Applications
13
In Situ Measurement, Interplanetary Gas, Interplanetary Space, Interstellar Gas, Neutral Atoms, Abundance, Cosmology, Deuterium, Hydrogen Atoms, Oxygen Atoms, Solar System Evolution
Scientific paper
Neutral atoms in interplanetary space play an important role in many processes relevant to the formation and evolution of the Solar System. An experimental approach is proposed for in situ atom detection based on the conversion of neutral atoms to negative ions at a specially prepared sensitive surface. Negative ions are subsequently analyzed and detected in an essentially noise-free mode. The use of the technique for in situ study of the composition of neutral interstellar atoms is considered. It is shown that interstellar H, D, and O atoms and possibly H2 molecules can be measured by the proposed technique. The experiment can be performed from a high-apogee Earth-orbiting satellite or from a deep space probe. Possible applications of the technique are discussed.
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