Open AccessPIC SIMULATION OF THE ELECTRON-ION COLLISION EFFECTS ON SUPRATHERMAL ELECTRONS
Author(s) -
Yanqing Wu,
Shensheng Han
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.915
Subject(s) - electron , physics , atomic physics , ion , collision , electric field , nuclear physics , computer science , computer security , quantum mechanics
The generation and transportation of suprathermal electrons are important to both traditional ICF scheme and “Fast Ignition” scheme. This paper discusses the effects of electronion collision on the generation and transportation of the suprathermal electrons by parametric instability. It indicates that the weak electron-ion term in the PIC simulation results in the enhancement of the collisional absorption and increase of the hot electron temperature and reduction in the maximum electrostatic field amplitude while wave breaking. Therefore the energy and distribution of the supratermal electrons are changed. They are distributed more close to the phase velocity of the electrostatic wave than the case without electron-ion collision term. The electron-ion collision enhances the self-consistent field and impedes the suprathermal electron transportation. These factors also reduce the supratermal electron energy. In addition, we discuss the effect of initial condition on PIC simulation to ensure that the results are correct.