|
|
New progress on DC H2+ beam generation: Tens of mA output and 70% fraction from a 2.45 GHz microwave driven ion source
Bujian Cui(崔步坚), Shixiang Peng(彭士香), Jianbin Zhu(朱建斌), Yicheng Dong(董宜承), Zhiyu Guo(郭之虞), and Jiaer Chen(陈佳洱)
Chin. Phys. B,
2025, 34 (8):
085203.
DOI: 10.1088/1674-1056/adf1ec
Recently H$_{2}^{+}$ ion beam finds widespread use in many fields, and the demand of high-current H$_{2}^{+}$ ion sources is urgent for numerous applications. However, there are currently almost no reported ion sources capable of generating a direct-current (DC) H$_{2}^{+}$ beam with tens of mA current. In previous work at Peking University (PKU), H$_{2}^{+}$ ion beams with a current of over 40 mA have been obtained in pulse mode, and a current of 16 mA was achieved in DC mode. In this paper, we report the generation of a DC H$_{2}^{+}$ ion beam with a current of 22 mA extracted from an improved miniaturized microwave driven ion source (MMDIS). Beam analysis shows that the H$_{2}^{+}$ fraction in the extracted beam is about 70%. The emittance of the mixed hydrogen beam is about 0.12 $\pi \cdot {\rm mm}\cdot {\rm mrad}$. These results provide references for the applications of H$_{2}^{+}$ beam and the design of H$_{2}^{+}$ ion source.
|
|
