Bolaños S, Manuel M J-E, Bailly-Grandvaux M, Bogale A S, Caprioli D, Klein S R, Michta D, Tzeferacos P, Beg F N
Center for Energy Research, <a href="https://ror.org/0168r3w48">University of California San Diego</a>, La Jolla, California 92093, USA.
<a href="https://ror.org/03ngjpk76">General Atomics</a>, <a href="https://ror.org/0168r3w48">San Diego</a>, California 92103, USA.
Phys Rev E. 2024 Sep;110(3):L033201. doi: 10.1103/PhysRevE.110.L033201.
We present an experimental investigation of the formation stage of a collisionless shock when the flow velocity is aligned with an ambient magnetic field utilizing laser-driven, super-Alfvénic plasma flows. As the flows interact, electromagnetic streaming instabilities develop. Proton deflectometry is used to visualize these electromagnetic fluctuations indicating the development of the ion-Weibel instability and the nonresonant instability. Hybrid simulations also show growth of the nonresonant instability and suggest that it provides an efficient source of dissipation for a shock.
我们利用激光驱动的超阿尔文等离子体流，对流速与背景磁场对齐时无碰撞激波的形成阶段进行了实验研究。当气流相互作用时，电磁流不稳定性发展。质子偏转测量法用于可视化这些电磁波动，表明离子-韦贝尔不稳定性和非共振不稳定性的发展。混合模拟也显示了非共振不稳定性的增长，并表明它为激波提供了一个有效的耗散源。
