Related Experiment Videos
Kinetic simulation model of magnetron discharges
I A Porokhova1, Y B Golubovskii, J Bretagne
1Ernst-Moritz-Arndt-University Greifswald, Domstrasse 10A, 17487 Greifswald, Germany.
Summary
This study presents a kinetic model for magnetron plasma discharges, detailing electron and ion behavior across the entire discharge gap. The findings offer insights into plasma properties and distribution functions under typical operating conditions.
Area of Science:
- Plasma Physics
- Applied Physics
- Computational Physics
Background:
- Magnetron discharges are crucial in various industrial applications.
- Accurate modeling of plasma behavior is essential for optimizing these devices.
- Previous models often simplified the complex kinetic processes within the discharge gap.
Purpose of the Study:
- To develop a self-consistent kinetic model for the entire gap of a cylindrical magnetron discharge.
- To investigate the influence of strong nonlocality effects on electron distribution functions.
- To provide a comprehensive description of plasma properties from cathode to anode.
Main Methods:
- Numerical solution of the spatially inhomogeneous Boltzmann kinetic equation.
- Incorporation of ion motion, current balance, and Poisson's equations.
- Modeling with all quantities varying radially and an axial magnetic field.
Main Results:
- Calculated distribution functions, electric field, and macroscopic plasma properties for argon discharge.
- Demonstrated the impact of nonlocality on distribution function formation.
- Provided a detailed, self-consistent kinetic description of the magnetron discharge.
Conclusions:
- The developed kinetic model accurately captures plasma behavior in magnetron discharges.
- Strong nonlocality effects significantly influence plasma characteristics.
- The model serves as a valuable tool for understanding and designing magnetron systems.