Journal
ASTROPHYSICAL JOURNAL
Volume 723, Issue 1, Pages 612-619Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/723/1/612
Keywords
dust, extinction; ISM: kinematics and dynamics
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Funding
- NSF [AST 0507164]
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We discuss a novel mechanism of dust acceleration which may dominate for particles smaller than similar to 0.1 mu m. The acceleration is caused by their direct electrostatic interactions arising from fluctuations of grain charges. The energy sources for the acceleration are the irreversible plasma processes occurring on the grain surfaces. We show that this mechanism of charge-fluctuation-induced acceleration likely affects the rate of grain coagulation and shattering of the population of small grains.
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