Model of Ambipolar Processes in Cumulative-Dissipative Self-Focusing Structures in Plasma—Part 3: Classification of Ambipolar Diffusions in Plasma With Current in the First Approximation According to the Vysikaylo’s Perturbation Theory

On the basis of Vysikaylo’s perturbation theory, it is solving of Gromeka-Lamba’s equations for charged particles suggested. The new type of ambipolar diffusion caused by inertia of ions and electrons had been investigated, and the processes of ambipolar diffusion in plasma had been classified. Three main types of ambipolar diffusion had been compared; they are: 1) Schottky’s diffusion (caused by higher electrons mobility and temperature than ions mobility and temperature); 2) Vysikaylo-Poisson’s diffusion (caused by the disturbance of electrical neutrality of plasma); and 3) Vysikaylo-Euler’s diffusion (caused by the inertia of ions and electrons). The coefficients of all diffusions had been calculated, and dependences on main plasma parameters had been determined. In accordance with the classification of ambipolar diffusions, jumps (shock waves) of the main plasma parameters were divided into shock waves with violation of the electrical neutrality of the plasma (Vysikaylo-Poisson) and diffusion shocks, which, in turn, were divided into Vysikaylo-Euler’s shocks and classical Schottky’s shocks. The modification of sources and sinks of charged particles was investigated by taking into account the electrons diffusion in the total current in the plasma.