相对论性laser束形成千特斯拉等离子体团
Kilotesla plasmoid formation by a trapped relativistic laser beam
摘要：
在相对论强皮秒激光脉冲作用下，具有弯曲内表面的空心靶中产生了强准稳磁场。实验数据证明了准稳态强磁化等离子体结构的形成，其在百皮秒时间尺度上衰减，最大磁场强度值为千特斯拉尺度。数值模拟揭示了磁场产生过程中瞬态过程的重要性，并提出了存在的快速和缓慢制度的等离子体团演化取决于相互作用参数。该原理装置对高磁化等离子体的应用前景和基础研究具有普遍意义。
英文摘要：
A strong quasi-stationary magnetic field is generated in hollow targets with curved internal surface under the action of a relativistically intense picosecond laser pulse. Experimental data evidence formation of quasistationary strongly magnetized plasma structures decaying on the hundred picoseconds time scale, with the maximum value of magnetic field strength of the kilotesla scale. Numerical simulations unravel the importance of transient processes during the magnetic field generation, and suggest the existence of fast and slow regimes of plasmoid evolution depending on the interaction parameters. The principal setup is universal for perspective highly magnetized plasma application and fundamental studies.
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