A self-consistent one-dimensional multi-fluid model of the plasma-wall transition in the presence of two species of negatively biased particles

19th International Summer School on Vacuum, Electron and Ion Technologies

Gyergyek, T.^1,2 ; Kovai, J.^2

University of Ljubljana, Faculty of Electrical Engineering, 25 Traka, Ljubljana

1000, Slovenia^1

Joef Stefan Institute, 39 Jamova, Ljubljana

1000, Slovenia^2

关键词: Electron population;    High temperature;    Multi-fluid models;    Planar electrode;    Plasma-wall transitions;    Second electrons;    Singly charged;    Three-fluid model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/700/1/012016/pdf
DOI  :  10.1088/1742-6596/700/1/012016

来源: IOP

【 摘 要 】

A one-dimensional three-fluid model of the plasma-wall transition in front of a large, negative, planar electrode is developed. The plasma contains one species of singly charged positive ions, Maxwellian electrons and a second group of singly charged negative particles. These particles can be either electrons with temperature different than that of the basic electron population or singly charged negative ions. The case with a second electron population with a high temperature is analyzed and transitions between the low and the high solutions are studied.