Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5477779 | Matter and Radiation at Extremes | 2016 | 5 Pages |
Abstract
Recently generation of strong magnetic (B) fields has been demonstrated in capacitor coils heated by high power laser pulses [S. Fujioka et al., Sci. Rep. 3, 1170 (2013)]. This paper will present a direct measurement of B field generated with an open-ended coil target driven by a nanosecond laser pulse using ultrafast proton radiography. The radiographs are analyzed with particle-tracing simulations. The B field at the coil center is inferred to be â¼50 T at an irradiance of â¼5 Ã 1014 W·cmâ2. The B field generation is attributed to the background cold electron flow pointing to the laser focal spot, where a target potential is induced due to the escape of energetic electrons.
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Authors
Guoqian Liao, Yutong Li, Baojun Zhu, Yanfei Li, Fang Li, Mengchao Li, Xuan Wang, Zhe Zhang, Shukai He, Weiwu Wang, Feng Lu, Faqiang Zhang, Lei Yang, Kainan Zhou, Na Xie, Wei Hong, Yuqiu Gu, Zongqing Zhao, Jie Zhang,