The formation mechanism of the periodic nanograting structure by the Weibel instability
The formation mechanism of the periodic nanograting structure by the Weibel instability
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韦贝尔不稳定性周期性纳米光栅结构的形成机制
DOI：
10.1007/s00339-016-9958-1
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and S. Sakabe
中科院分区：
文献类型：
--
作者：
A. M. Gouda;H. Sakagami;T. Ogata;M. Hashida;and S. Sakabe
利用CELL程序中的二维粒子，在氢等离子体中用波长为800 nm、入射角为0°、线偏振、强度为1018W/cm~2的超快激光500-fs脉冲，演示了周期性纳米级结构的形成机理。在预制等离子体和致密等离子体的交界处，周期性纳米级结构明显地自组织。通过对高密度等离子体中磁场和电流密度的时间演化，发现魏贝尔不稳定性在形成周期性纳米级结构中起着重要的作用。
The two-dimensional particle in cell code has been used to demonstrated the formation mechanism for the periodic nanograting structure using 500-fs pulses of an ultra-fast laser with wavelength 800 nm, incidence angle 0°, linearly-polarized, and intensity 1018W/cm2µm2in hydrogen plasma. The periodic nanograting structure has been clearly self-organized at the boundary between the preformed plasma and the dense plasma att= 250 fs. By time evolution of the magnetic field and the current density in the dense plasma, it has been found that the Weibel instability plays a significant role to form the periodic nanograting structure.