Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.035002
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Funding
- Laboratory Directed Research and Development (LDRD) program
- U.S. Department of Energy Office of Science, Office of Fusion Energy Sciences under the National Nuclear Security Administration of the U.S. Department of Energy by Los Alamos National Laboratory [DE-AC52-06NA25396]
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Dust particulates immersed in a quasineutral plasma can emit electrons in several important applications. Once electron emission becomes strong enough, the dust enters the positively charged regime where the conventional orbital-motion-limited (OML) theory can break down due to potential-well effects on trapped electrons. A minimal modification of the trapped-passing boundary approximation in the so-called OML+ approach is shown to accurately predict the dust charge and heat collection flux for a wide range of dust size and temperature.
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