Progress in Plasma Processing of Materials, 1999

ISBN Print: 1-56700-126-2

OSCILLATION PHENOMENA IN RECOMBINING PLASMAS

DOI: 10.1615/ITPPC-1998.470
pages 313-319

Аннотация

This work is focused on the analysis of the oscillation character of electron temperature, electron density and concentration of excited atoms under plasma relaxation conditions. A theoretical model of this phenomenon is presented, which is based on self-consistent balance equations as a dynamic system.
It is shown that in case of a low ionisation degree the oscillations may arise when the relaxation frequencies of free electron energy losses, which are determined elastic electron-atom collisions, the radiative population of resonant levels and their quenching due to inelastic collisions are almost equal to each other. In case of rather high ionisation degree the self-oscillations can arise when the energy losses of free electrons are determined by electron-ion collisions.