Three-dimensional PIC/MCC simulation of electron deposition in JAEA 10 A ion sources
A systematic research on the electron deposition process in the JAEA 10 A ion source is carried out by using a particle-in-cell/Monte Carlo collision simulation, which is based on a full three-dimensional self-developed code. Two parts are studied. One is the space and energy distribution of fast an...
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| Published in | Chinese physics B Vol. 23; no. 9; pp. 283 - 287 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.09.2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/23/9/095201 |
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| Summary: | A systematic research on the electron deposition process in the JAEA 10 A ion source is carried out by using a particle-in-cell/Monte Carlo collision simulation, which is based on a full three-dimensional self-developed code. Two parts are studied. One is the space and energy distribution of fast and slow electrons, the other is the vibration excitation collisions between electrons and hydrogen moleculars. The results show that the inhomogeneity of electrons comes from the Y direction drift of the fast electrons （Te ≥25 eV） due to the action of the magnetic fields. This drift also increases the number of vibration excitation collisions in the -Y direction, and results in the increase of Ha in the -Y direction, eventually leading to the -Y drift of H^-. It explains the spatial non-uniformity in the JAEA 10 A ion source. |
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| Bibliography: | JAEA 10 A ion source, particle-in-cell/Monte Carlo collision simulation, spatial non-uniformity Yang Chao, Yin Mao-Wei, Shang Li-Ping, Wei Ai-Yong（ School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China） 11-5639/O4 A systematic research on the electron deposition process in the JAEA 10 A ion source is carried out by using a particle-in-cell/Monte Carlo collision simulation, which is based on a full three-dimensional self-developed code. Two parts are studied. One is the space and energy distribution of fast and slow electrons, the other is the vibration excitation collisions between electrons and hydrogen moleculars. The results show that the inhomogeneity of electrons comes from the Y direction drift of the fast electrons （Te ≥25 eV） due to the action of the magnetic fields. This drift also increases the number of vibration excitation collisions in the -Y direction, and results in the increase of Ha in the -Y direction, eventually leading to the -Y drift of H^-. It explains the spatial non-uniformity in the JAEA 10 A ion source. |
| ISSN: | 1674-1056 2058-3834 |
| DOI: | 10.1088/1674-1056/23/9/095201 |