Particle-In-Cell (PIC) Simulations of Electron Focusing Heating Phenomena in Bilateral Ion Extraction Process

Abstract

Particle-in-cell simulations of bilateral ion extraction process are carried out for electron focusing heating phenomenon in this work. The mechanisms and characteristics of the negative heating effect are simulated and analyzed. Then influences of several factors on electron heating degree and ion collection ratio are provided numerically. Finally, relations between the negative heating effect and extraction instability phenomenon are discussed and an approach to mitigate the heating effect is given.