Theory of structures in near-electrode plasma regions.

摘要: A number of well-known features a constricted discharge in plasma near-electrode layers (e.g., the normal current-density effect) proceeds from fact that layer thickness is much smaller than longitudinal dimensions. better understanding these may be achieved by means asymptotic approach, which treats ratio above-mentioned lengths as small parameter. In vicinity extreme points current-voltage characteristic distributed regime (regime with uniform distribution current density over electrode surface), this approach similar to perturbation method, reducing reaction-diffusion equations an instability point Ginzburg-Landau equation, and results Fisher-type equation for perturbations distribution. Using stationary are found their stability analyzed. addition, above-noted applied analysis regimes. particular, it shown interaction spot (covered area) lateral boundaries and/or other spots transmitted exponentially introduced into regions occupied cold hot phases. Application obtained transition between abnormal regimes glow-discharge near-cathode region discussed.