Influence of grid on the extraction characteristics of different charged ions in mixed ion beams

doi:10.1088/1674-1056/add4e0

中国物理B ›› 2025, Vol. 34 ›› Issue (8): 85202-085202.doi: 10.1088/1674-1056/add4e0

Influence of grid on the extraction characteristics of different charged ions in mixed ion beams

Ao Xu(徐翱)†, Xiang Wan(万翔), and Pingping Gan(甘娉娉)

Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999, China

收稿日期:2025-02-26 修回日期:2025-04-09 接受日期:2025-05-07 出版日期:2025-07-17 发布日期:2025-08-05
通讯作者: Ao Xu E-mail:xuao@caep.cn
基金资助:
Project supported by the Presidential Foundation of China Academy of Engineering Physics (Grant No. YZJJZQ2022016), and the National Natural Science Foundation of China (Grant No. 52207177).

Influence of grid on the extraction characteristics of different charged ions in mixed ion beams

Ao Xu(徐翱)†, Xiang Wan(万翔), and Pingping Gan(甘娉娉)

Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999, China

Received:2025-02-26 Revised:2025-04-09 Accepted:2025-05-07 Online:2025-07-17 Published:2025-08-05
Contact: Ao Xu E-mail:xuao@caep.cn
Supported by:
Project supported by the Presidential Foundation of China Academy of Engineering Physics (Grant No. YZJJZQ2022016), and the National Natural Science Foundation of China (Grant No. 52207177).

摘要/Abstract

摘要： The extraction characteristics of multi-charged ions produced by ion sources are important for some useful applications. In this paper, the extraction process of Cu$^{+}$, Cu$^{2+}$, Cu$^{3+}$, and Cu$^{4+}$ mixed ions is simulated by setting ideal physical parameters in a two-dimensional particle-in-cell (PIC) code, and the evolution characteristics of density and velocity distributions of different charged ions during plasma (density about 10$^{15}$ m$^{-3}$) motion and extraction are presented. Besides, the effects of grid thickness and grid aperture on the motion behavior of different charged ions and the extracted ion current are analyzed. The results showed that the ion diffusion increases with the increase of the ion charge, and higher charged ions are more likely to be affected by the grid. This provides support for further understanding of the extraction characteristics of multi-charged mixed ion beams.

关键词: ion extraction, grid, multi-charged ion, density distribution

Abstract: The extraction characteristics of multi-charged ions produced by ion sources are important for some useful applications. In this paper, the extraction process of Cu$^{+}$, Cu$^{2+}$, Cu$^{3+}$, and Cu$^{4+}$ mixed ions is simulated by setting ideal physical parameters in a two-dimensional particle-in-cell (PIC) code, and the evolution characteristics of density and velocity distributions of different charged ions during plasma (density about 10$^{15}$ m$^{-3}$) motion and extraction are presented. Besides, the effects of grid thickness and grid aperture on the motion behavior of different charged ions and the extracted ion current are analyzed. The results showed that the ion diffusion increases with the increase of the ion charge, and higher charged ions are more likely to be affected by the grid. This provides support for further understanding of the extraction characteristics of multi-charged mixed ion beams.

Key words: ion extraction, grid, multi-charged ion, density distribution

中图分类号: (Plasma simulation)

52.65.-y

52.65.Rr (Particle-in-cell method) 29.25.-t (Particle sources and targets) 29.25.Ni (Ion sources: positive and negative)

Ao Xu(徐翱), Xiang Wan(万翔), and Pingping Gan(甘娉娉). Influence of grid on the extraction characteristics of different charged ions in mixed ion beams[J]. 中国物理B, 2025, 34(8): 85202-085202.

Ao Xu(徐翱), Xiang Wan(万翔), and Pingping Gan(甘娉娉). Influence of grid on the extraction characteristics of different charged ions in mixed ion beams[J]. Chin. Phys. B, 2025, 34(8): 85202-085202.

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Influence of grid on the extraction characteristics of different charged ions in mixed ion beams

Influence of grid on the extraction characteristics of different charged ions in mixed ion beams

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