Charge equilibration of Laser-accelerated Carbon Ions in Foam Target

Bubo Ma; Jieru Ren; Lirong Liu; Wenqing Wei; Benzheng Chen; Shizheng Zhang; Hao Xu; Zhongmin Hu; Fangfang Li; Xing Wang; Shuai Yin; Jianhua Feng; Xianming Zhou; Yifang Gao; Yuan Li; Xiaohua Shi; Jianxing Li; Xueguang Ren; Zhongfeng Xu; Zhigang Deng; Wei Qi; Shaoyi Wang; Quanping Fan; Bo Cui; Weiwu Wang; Zongqiang Yuan; Jian Teng; Yuchi Wu; Zhurong Cao; Zongqing Zhao; Yuqiu Gu; Leifeng Cao; Shaoping Zhu; Rui Cheng; Yu Lei; Zhao Wang; Zexian Zhou; Guoqing Xiao; Hongwei Zhao; Dieter H. H. Hoffmann; Weimin Zhou; Yongtao Zhao

arXiv · 2310.01047

Charge equilibration of Laser-accelerated Carbon Ions in Foam Target

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Abstract

The charge equilibration of laser-accelerated carbon ion beams in 2 mg/cm3 foam target was investigated experimentally. The ions were generated through target normal sheath acceleration mechanism in laser-foil interaction scheme. This allows to get the equilibrium charge state in wide energy range near Bragg peak within a single shot. By using foam, the charge equilibration measurement in density regime between gas and solid state was firstly reached out experimentally. It was found that the theoretical predictions with tabulated cross section data for gas target greatly underestimated the charge states. The experimental data are in close agreement with both semi-empirical formula as well as rate equation predictions based on ion-solid interactions. The important role of target density effects that increase the ionization probability and decrease the electron capture probability through frequent multi-collisions in foam are demonstrated. The double electron processes are shown to have little influence on the average charge states. The findings are essential for high energy density physics research where the foams are widely used, and have impacts on a broad range of applications in medical, biological and material fields. The method also provides a new approach to investigate the interaction mechanism of swift heavy ions in matter by taking advantage of the laser-accelerated short-pulse wide-energy range ions.

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Bubo Ma, Jieru Ren, Lirong Liu, Wenqing Wei, Benzheng Chen, Shizheng Zhang, Hao Xu, Zhongmin Hu, Fangfang Li, Xing Wang, Shuai Yin, Jianhua Feng, Xianming Zhou, Yifang Gao, Yuan Li, Xiaohua Shi, Jianxing Li, Xueguang Ren, Zhongfeng Xu, Zhigang Deng, Wei Qi, Shaoyi Wang, Quanping Fan, Bo Cui, Weiwu Wang, Zongqiang Yuan, Jian Teng, Yuchi Wu, Zhurong Cao, Zongqing Zhao, Yuqiu Gu, Leifeng Cao, Shaoping Zhu, Rui Cheng, Yu Lei, Zhao Wang, Zexian Zhou, Guoqing Xiao, Hongwei Zhao, Dieter H. H. Hoffmann, Weimin Zhou, Yongtao Zhao. 2023-10-02. Charge equilibration of Laser-accelerated Carbon Ions in Foam Target. https://arxiv.org/abs/2310.01047

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