Spatial and temporal plasma evolutions of magnetic reconnection in laser produced plasmas
Spatial and temporal plasma evolutions of magnetic reconnection in laser produced plasmas
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DOI：
10.1016/j.hedp.2017.02.004
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发表时间：
2017-06-01
影响因子：
1.6
通讯作者：
Kuramitsu, Y.
中科院分区：
文献类型：
--
作者：
Khasanah, N.;Peng, C. W.;Kuramitsu, Y.
对激光等离子体中的磁场重联进行了实验研究。通过用高功率激光束照射固体靶，由于比尔曼效应而产生磁泡。当两束激光的焦斑有一定的位移时，产生两个磁泡，磁重联可以发生。我们利用分幅相机的光学诊断技术测量了等离子体的空间和时间演化。我们观察到等离子体射流，这被认为是重联流出。等离子体射流的时空尺度比激光射流大得多。由膨胀速度估算了磁重联时间，与Sweet帕克模型一致。(C)2017 Elsevier B.V.版权所有
Magnetic reconnection is experimentally investigated in laser produced plasmas. By irradiating a solid target with a high-power laser beam, a magnetic bubble is generated due to the Biermann effect. When two laser beams with finite focal spot displacements are utilized, two magnetic bubbles are generated, and the magnetic reconnection can take place. We measure the spatial and temporal plasma evolutions with optical diagnostics using framing camera. We observed the plasma jets, which are considered to be reconnection out flows. Spatial and temporal scales of the plasma jets are much larger than those of laser. The magnetic reconnection time has been estimated from the expansion velocity, which is consistent with the Sweet Parker model. (C) 2017 Elsevier B.V. All rights reserved