Open AccessNumerical simulation of energy deposition and extraction efficiency of the volume produced negative hydrogen ions
Author(s) -
Chao Yang,
Dagang Liu,
Huihui Wang,
Yupeng Yang,
Liao Fang-Yan,
Laqun Liu,
Kai Peng,
Xia Meng-Zhong
Publication year - 2012
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.61.235201
Subject(s) - hydrogen , ion , materials science , atomic physics , magnetic field , volume (thermodynamics) , extraction (chemistry) , physics , chemistry , chromatography , quantum mechanics
In this paper, the negative hydrogen ion transportation and energy deposition mechanism are investigated deeply, and the collisions between negative hydrogen ions with other particles are treated by the three-dimensional Monte Carlo method. The storage of the particles and the constraint function of magnetic field are disposed by particle-in-cell (PIC) technology under the CHIPIC software. Based on this, negative hydrogen ion transportation and scattering case in the JAERI 10 A multicusp ion source are simulated. The influences of pressure and filter magnetic field on negative hydrogen ion transportation and extraction characteristics are analyzed and discussed. Results show that the greater the pressure, the bigger the collision loss of the volume produced negative hydrogen ions, and also the smaller the number of negative hydrogen ions reaching the wall and extracted is; in the lower discharge case, the more intensively the negative hydrogen ion extraction is influenced by the filter magnetic field, and also the stronger the filter magnetic field, the worse the extraction effectiveness is.