Electric charge on grains in diffuse clouds

Details Electric charge on grains in diffuse clouds Electric charge on grains in diffuse clouds

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..148t&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Jan. 1, 1991, p. 148-152.

Astronomy and Astrophysics

Astronomy

10

Electric Charge, Interstellar Matter, Molecular Clouds, Abundance, Astronomical Photometry, Interstellar Chemistry

Scientific paper

The magnitude and sign of the electric charge on large and small interstellar grains, in a range of environments is calculated. As far as possible, physical properties appropriate for realistic grain materials are assumed. The grain charge calculation to a reliable model of the chemistry of an interstellar cloud in hydrostatic equilibrium are linked, and results presented as a function of depth into the cloud. Grains of high and low band-gap energy have distinctly different behaviors with respect to charging, and, for a wide variety of interstellar conditions, zones in clouds occur where grains of opposite charge coexist. The consequences of such a situation are briefly described.

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