The preliminary test of multi-charged ions generation with a 2.45 GHz microwave-driven ion source

TengHao Ma; ShiXiang Peng; JingFeng Zhang; WenBin Wu; YaoXiang Jiang; HaiTao Ren; Yuan Xu; Jiang Sun; Kai Li; ZhiYu Guo; JiaEr Chen

doi:10.1063/1.5128130

The preliminary test of multi-charged ions generation with a 2.45 GHz microwave-driven ion source

Rev Sci Instrum. 2020 Feb 1;91(2):023312. doi: 10.1063/1.5128130.

Authors

TengHao Ma¹, ShiXiang Peng¹, JingFeng Zhang¹, WenBin Wu¹, YaoXiang Jiang¹, HaiTao Ren¹, Yuan Xu¹, Jiang Sun¹, Kai Li¹, ZhiYu Guo¹, JiaEr Chen¹

Affiliation

¹ State Key Laboratory of Nuclear Physics and Technology and Institute of Heavy Ion Physics, Peking University, Beijing 100871, China.

PMID: 32113445
DOI: 10.1063/1.5128130

Abstract

A 2.45 GHz microwave-driven ion source for the generation of multicharged ions has been designed and built at Peking University recently. The magnetic field configuration of this ion source is a minimum-B type with a combination of a hexapole field and an axial mirror field. Argon was selected as the first tested beam generated by this ion source. A 63 µA Ar⁴⁺ ion beam at 35 kV extraction voltage was obtained in the pulsed mode (50 Hz/500 µs). Without the hexapole magnetic field, the highest charge state was only Ar²⁺, and no Ar⁴⁺ ion beam was detected. The comparison between the two sets of experimental results with different magnetic configurations has proven the rationality of the production of multicharged ions with this ion source. Both experimental results and discussion will be presented in this paper.