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Volume 1 Issue 4
Jul.  2016
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Article Contents
Liao Guoqian, Li Yutong, Zhu Baojun, Li Yanfei, Li Fang, Li Mengchao, Wang Xuan, Zhang Zhe, He Shukai, Wang Weiwu, Lu Feng, Zhang Faqiang, Yang Lei, Zhou Kainan, Xie Na, Hong Wei, Gu Yuqiu, Zhao Zongqing, Zhang Baohan, Zhang Jie. Proton radiography of magnetic fields generated with an open-ended coil driven by high power laser pulses[J]. Matter and Radiation at Extremes, 2016, 1(4). doi: 10.1016/j.mre.2016.06.003
Citation: Liao Guoqian, Li Yutong, Zhu Baojun, Li Yanfei, Li Fang, Li Mengchao, Wang Xuan, Zhang Zhe, He Shukai, Wang Weiwu, Lu Feng, Zhang Faqiang, Yang Lei, Zhou Kainan, Xie Na, Hong Wei, Gu Yuqiu, Zhao Zongqing, Zhang Baohan, Zhang Jie. Proton radiography of magnetic fields generated with an open-ended coil driven by high power laser pulses[J]. Matter and Radiation at Extremes, 2016, 1(4). doi: 10.1016/j.mre.2016.06.003

Proton radiography of magnetic fields generated with an open-ended coil driven by high power laser pulses

doi: 10.1016/j.mre.2016.06.003
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  • Corresponding author: *Corresponding author. National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China. E-mail address: ytli@iphy.ac.cn (Y. Li).
  • Received Date: 2016-03-31
  • Accepted Date: 2016-06-08
  • Available Online: 2021-12-07
  • Publish Date: 2016-07-15
  • 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 ∼50 T at an irradiance of ∼5 × 1014 W·cm−2. 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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