Other
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..267g&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, March 1988, p. 267-271. In Russian. In Russian.
Other
Boundary Layer Plasmas, Cometary Atmospheres, Electron Attachment, Electron Energy, Solar Wind, Gas Density, Halley'S Comet, Neutral Gases
Scientific paper
The losses of electrons due to the processes of dissociative attachment to the neutral water molecules in the course of solar wind stagnation near comets like Halley comet result in a sharp decrease of electron temperature at a definite density of neutral gas from 2 eV to about 0.1 eV. This is the reason of formation of a sharp plasma boundary between the solar wind loaded by cometary ions and a stagnated cometary plasma above the contact surface, finding itself in photoionization equilibrium. Another consequence of these processes is the appearance of a large amount of negative ions with density of the order of electron density above this boundary, because closer to the cometary nucleus their density is negligible.
Galeev A. A.
Khabibrakhmanov Ildar K.
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