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强激光照射金属线圈后,会在打靶点附近的背景等离子体中诱发冷电子的回流,在金属丝内形成强电流源,从而产生强磁场.本文利用神光II高功率激光器产生的强激光照射金属丝靶,产生了围绕金属丝的环形强磁场.利用B-dot对局域磁感应强度进行了测量,根据测量结果,结合三维模拟程序,反演得到磁场的空间分布.再利用强激光与CH平面靶相互作用产生的超音速等离子体撞击该金属丝,产生了弓激波.通过光学成像手段研究了磁场对冲击波的影响,发现磁场使得弓激波的轮廓变得不明显并且张角变大.同时,通过实验室天体物理定标率,将金属丝表面等离子参数变换到相应的天体参数中,结果证明利用该实验方法可以在实验室中产生类似太阳风的磁化等离子体.
Strong laser irradiation metal coil, the target plasma will be induced in the background near the back of cold electrons in the wire to form a strong current source, resulting in a strong magnetic field.In this paper, the use of SGL II high-power laser generated by intense laser irradiation A strong magnetic field around the wire was generated.The magnetic induction intensity was measured by B-dot, and the spatial distribution of the magnetic field was obtained by inversion based on the measurement results and the 3D simulation program. The impact of the magnetic field on the shock wave was studied by means of optical imaging and found that the magnetic field caused the profile of the bow shock to become insignificant and the angle of divergence became larger At the same time, through the laboratory astrophysical calibration, the surface plasmon parameters are transformed into the corresponding celestial parameters, and the results show that the solar plasma magnetization can be produced in the laboratory by using the experimental method.