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arXiv · 2209.04992

Alpha-particle generation from H-11B fusion initiated by laser-accelerated boron ions

Defeng Kong·Shirui Xu·Yinren Shou·Ying Gao·Zhusong Mei·Zhuo Pan·Zhipeng Liu·Zhengxuan Cao·Yulan Liang·Ziyang Peng·Pengjie Wang·Di Luo·Yang Li·Zhi Li·Huasheng Xie·Guoqiang Zhang·Wen Luo·Jiarui Zhao·Shiyou Chen·Yixing Geng·Yanying Zhao·Jianming Xue·Xueqing Yan·Wenjun Ma
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Abstract

Here we report the generation of MeV alpha-particles from H-11B fusion initiated by laser-accelerated boron ions. Boron ions with maximum energy of 6MeV and fluence of 10^9/MeV/sr@5MeV were generated from 60-nm-thick self-supporting boron nanofoils irradiated by 1J femtosecond pulses at an intensity of 10^19W/cm^2. By bombarding secondary hydrogenous targets with the boron ions, 3*10^5/sr alpha-particles from H-11B fusion were registered, which is consistent with the theoretical yield calculated from the measured boron energy spectra. Our results demonstrate an alternative way toward ultrashort MeV alpha-particle sources employing compact femtosecond lasers. The ion acceleration and product measurement scheme are referential for the studies on the ion stopping power and cross-section of the H-11B reaction in solid or plasma.

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Defeng Kong, Shirui Xu, Yinren Shou, Ying Gao, Zhusong Mei, Zhuo Pan, Zhipeng Liu, Zhengxuan Cao, Yulan Liang, Ziyang Peng, Pengjie Wang, Di Luo, Yang Li, Zhi Li, Huasheng Xie, Guoqiang Zhang, Wen Luo, Jiarui Zhao, Shiyou Chen, Yixing Geng, Yanying Zhao, Jianming Xue, Xueqing Yan, Wenjun Ma. 2022-09-12. Alpha-particle generation from H-11B fusion initiated by laser-accelerated boron ions. https://doi.org/10.1155/2022/5733475

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