The Influence of Trapped Ions and Non-equilibrium EDF on Dust Particle Charging
- Institute of Thermophysics SB RAS, Lavrentyev Ave., 1, Novosibirsk, 630090 (Russian Federation)
- Institute for High Energy Densities, Russian Academy of Sciences, Izhorskaya Str., 13, build 2, Moscow, 125412 (Russian Federation)
Dust particles charging in a low-pressure glow discharge was investigated theoretically with the help of model for trapped and free ions coupled with the self-consistent solution of Poisson equation for electric potential. Non-equilibrium (non-Maxwellian) character of electron energy distribution function depending on gas pressure and electric field was also taken into account on the basis of the solution of kinetic Boltzmann equation. The results were compared with the experimental measurements of dust particle charge depending on gas pressure. It was shown that the calculated effective charge, i.e. the difference of the dust particle charge and trapped ion charge, is in a fairly good agreement with the experimental data.
- OSTI ID:
- 21251208
- Journal Information:
- AIP Conference Proceedings, Vol. 1041, Issue 1; Conference: 5. international conference on the physics of dusty plasmas, Ponta Degada, Azores (Portugal), 18-23 May 2008; Other Information: DOI: 10.1063/1.2996727; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dust-ion-acoustic solitons in plasmas with non-Maxwellian electron distribution function
Stability of dust acoustic wavepackets suffering from polarization force due to the presence of trapped ions