Progress in Plasma Processing of Materials, 2003
ISBN Print: 978-1-56700-192-1
ISBN Online: 978-1-56700-447-2
INVESTIGATION ON BISTABILITY IN INDUCTIVELY-COUPLED PLASMA TORCHES WITH NON-CONVENTIONAL COIL
DOI: 10.1615/ITPPC-2002.180
pages 141-146
Abstract
In previous works on ICPTs with split coil [1,2], the Authors pointed out that for a particular choice of the geometric parameters two equilibrium states for the plasma exist for the same induction coil current. In the present study, a deep investigation of the transition between the two states is performed with a time-dependent simulation code, evidencing a sort of hysteresis phenomenon. A parametric study is carried out in order to find threshold parameters for the bistability in different geometries. For some cases, time oscillating behaviour of plasma is found.
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