摘要
Magnetic reconnection of the self-generated magnetic fields in laser-plasma interaction is an important laboratory method for modeling high-energy density astronomical and astrophysical phenomena.We use the Martin-Puplett interferometer(MPI)polarimeter to probe the peripheral magnetic fields generated in the common magnetic reconnection configuration,two separated coplanar plane targets,in laser-target interaction.We introduce a new method that can obtain polarization information from the interference pattern instead of the sinusoidal function fitting of the intensity.A bidirectional magnetic field is observed from the side view,which is consistent with the magneto-hydro-dynamical(MHD)simulation results of self-generated magnetic field reconnection.We find that the cancellation of reverse magnetic fields after averaging and integration along the observing direction could reduce the magnetic field strength by one to two orders of magnitude.It indicates that imaging resolution can significantly affect the accuracy of measured magnetic field strength.
作者
张雅芃
姚嘉文
刘正东
马作霖
仲佳勇
Ya-Peng Zhang;Jia-Wen Yao;Zheng-Dong Liu;Zuo-Lin Ma;Jia-Yong Zhong(Department of Astronomy,Beijing Normal University,Beijing 100875,China;Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China)
基金
Project supported by the National Key R&D Program of China (Grant Nos.2022YFA1603200 and 2022YFA1603203)
the National Natural Science Foundation of China (Grant Nos.12075030,12135001,12175018,and 12325305)
the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No.XDA25030700)
the Research Grants Council of Hong (Grant No.14307118)
the Youth Interdisciplinary Team (Grant No.JCTD-2022-05)
supported by the China Postdoctoral International Exchange Program。
