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Zhang, Yihang; Zhang, Zhe; Zhu, Baojun; Weiman Jiang; Cheng, Lei; Zhao, Lei; Zhang, Xiaopeng; Zhao, Xu; Yuan, Xiaohui; Tong, Bowei; Zhong, Jiayong; He, Shukai; Lu, Feng; Wu, Yuchi; Zhou, Weimin; Zhang, Faqiang; Zhou, Kainan; Xie, Na; Huang, Zheng; Gu, Yuqiu; Weng, Suming; Xu, Miaohua; Li, Yingjun; Li, Yutong
arXiv (Cornell University), 02/2020Paper, Journal Article
The dynamics of nuclear reaction in plasma is a fundamental issue in many high energy density researches, such as the astrophysical reactions and the inertial confinement fusion. The effective reaction cross-sections and ion stopping power in plasma need to be taken into account to analyze the reactivity. In this research, we have experimentally investigated the from D-D reactions from interactions between deuteron beams and deuterated polystyrene (CD) plasma, driven by two laser pulses respectively. The neutron yields, plasma density and deuteron energy loss in plasma have been measured, and the plasma temperature and deuteron stopping power have been analyzed from simulations. It is shown that, compared with a cold target, the reaction probability in plasma conditions can be enhanced or suppressed, which is ascribed to the deuteron stopping power modifications in plasma. In hotter CD plasma, the energy loss of moderate energetic deuterons reduces, which leads to higher D-D reaction probability, while the contrary happens in colder plasma. This work provides new understanding of fusion reactions in plasma environment.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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