Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (9): 126 doi: 10.1007/s41365-018-0464-3

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Effect of magnetic field distribution on ECR ion source discharge

Yu-Guo Liu, Jian-Lin Ke, Guang-Yi Zhao, Ben-Chao Lou, Yong-Hong Hu, Rong Liu   

  1. Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
  • Contact: Yu-Guo Liu E-mail:liuyg10@lzu.edu.cn
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Yu-Guo Liu, Jian-Lin Ke, Guang-Yi Zhao, Ben-Chao Lou, Yong-Hong Hu, Rong Liu. Effect of magnetic field distribution on ECR ion source discharge.Nuclear Science and Techniques, 2018, 29(9): 126     doi: 10.1007/s41365-018-0464-3

Abstract:

An electron cyclotron resonance ion source model that uses a coaxial antenna to inject the RF power was simulated, and the corresponding hydrogen plasma densities of the ion source were calculated at different magnetic field distributions via a fluid model. The results show that most of the microwave power is absorbed around the resonance surface near the antenna when the plasma density is below the cutoff density of 7.4 × 1016 m-3 for 2.45 GHz microwaves, and the simulation results also show that the plasma density is strongly influenced by the position and shape of the resonance surface, where a larger resonance surface would improve the plasma density.

Key words: ECR ion source, Magnetic field distribution, Plasma simulation