Charging and heat collection by a positively charged dust grain in a plasma

Abstract

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.

5 pages, 4 figures. http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.035002. "Copyright (2014) by the American Physical Society."

References in corpus (1)

• Orbital-motion-limited theory of dust charging and plasma response

Cited by in corpus (3)

• Orbital-motion-limited theory of dust charging and plasma response
• Comparison of dust charging between Orbital-Motion-Limited theory and Particle-In-Cell simulations
• A critique of "quantum dusty plasmas"