On the production of suprathermal grains

Details On the production of suprathermal grains On the production of suprathermal grains

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..72..271d&link_type=abstract

Astrophysics and Space Science, vol. 72, no. 2, Oct. 1980, p. 271-280.

Astronomy and Astrophysics

Astrophysics

3

Cosmic Dust, Grains, Particle Acceleration, Particle Production, Charged Particles, Magnetic Mirrors, Pressure Effects, Radiation Pressure, Terminal Velocity

Scientific paper

The physical conditions under which suprathermal grains can be produced when they are accelerated by radiation pressure against the drag of ambient gas are investigated. It is found that dust grains may attain a terminal velocity U(=100,000 cm/sec) in most regions and move out of the midplane of the source region about a distance less than or equal to 100 pc. Once clear of the main gas/dust layer the dust grains (radius approximately 0.000003 cm) may then attain suprathermal energy (grain velocity approximately 3 x 10 to the 8th cm/sec) by the Fermi process.

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