Charged dust particles in an RF and UV-driven plasma
- FOM Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands)
Dust particles in a radio-frequency discharge generally obtain a negative charge due to the high mobility of the electrons compared to that of the positive ions. When a sufficiently intense flux of photons in the UV range is present, however, the dust charge will be less negative due to photodetachment. The resulting charge distribution will depend on the competition between collection of electrons and ions from the plasma and the detachment by photons. In this paper we study the influence of photodetachment on the charge of dustparticles suspended in a radio-frequency discharge, as well as its influence on the electron energy distribution function and the electron and ion density profiles. An existing Particle-In-Cell code has been modified to include the photodetachment process.
- OSTI ID:
- 20726802
- Journal Information:
- AIP Conference Proceedings, Vol. 799, Issue 1; Conference: 4. international conference on the physics of dusty plasmas, Orleans (France), 13-17 Jun 2005; Other Information: DOI: 10.1063/1.2134651; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
On Influence of Neutrals on Dust Particle Charging in Complex Plasmas in the Presence of Electromagnetic Radiation
Stochastic fluctuations of dust particle charge in RF discharges