Strong magnetic fields generated with a simple open-ended coil irradiated by high power laser pulses
Strong magnetic fields generated with a simple open-ended coil irradiated by high power laser pulses
复制标题
由高功率激光脉冲照射的简单开放式线圈产生强磁场
DOI：
10.1063/1.4939119
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发表时间：
2015
影响因子：
4
通讯作者：
Z
中科院分区：
文献类型：
--
作者：
Zhu B. J.;Li Y. T.;Yuan D. W.;Li Y. F.;Li F.;Liao G. Q.;Zhao J. R.;Zhong J. Y.;Xue F. B.;He S. K.;Wang W. W.;Lu F.;Zhang F. Q.;Yang L.;Zhou K. N.;Xie N.;Hong W.;Wei H. G.;Zhang K.;Han B.;Pei X. X.;Liu C.;Zhang Z.;Wang W. M.;Zhu J. Q.;Gu Y. Q.;Zhao Z. Q.;Z
提出了一种利用高功率激光脉冲加热开放式线圈中冷电子流产生强磁场的简单方案。它不同于上一代由电容器线圈目标中的快速电子电流驱动的磁场[S]。Fujioka et al., Sci。众议员3,1170(2013)]。我们实验中的场分别用b点探测器和质子射线照相测量。在6.85 × 1014 W cm−2 μm2的自由空间内，线圈目标中心产生205 T强磁场，其中I为激光强度，λ为激光波长。磁场强度与Iλ2成正比。与电容线圈靶相比，该靶的磁场产生机理简单，且易于制作。
A simple scheme to produce strong magnetic fields due to cold electron flow in an open-ended coil heated by high power laser pulses is proposed. It differs from previous generation of magnetic fields driven by fast electron current in a capacitor-coil target [S. Fujioka et al., Sci. Rep. 3, 1170 (2013)]. The fields in our experiments are measured by B-dot detectors and proton radiography, respectively. A 205 T strong magnetic field at the center of the coil target is generated in the free space at Iλ2 of 6.85 × 1014 W cm−2 μm2, where I is the laser intensity, and λ is the laser wavelength. The magnetic field strength is proportional to Iλ2. Compared with the capacitor-coil target, the generation mechanism of the magnetic field is straightforward and the coil is easy to be fabricated.