关于激波诱导界面不稳定性放大磁场的激光天体物理实验
等离子体物理
2021-09-29 v1 高能天体物理现象
摘要
激光实验正成为天文研究中补充观测与理论建模的新工具。在超新星爆发的激波前沿已观测到局域强磁场。对该观测的实验确认与物理机制辨识，对于理解星际介质的演化至关重要。然而，在实验室中处理流体动力学不稳定性与环境磁场之间的相互作用一直具有挑战性。在此，我们开发了一个实验平台来检验磁化 Richtmyer-Meshkov 不稳定性（RMI）。测得的增长速度与线性理论一致，且磁场放大与 RMI 增长相关。我们的实验首次在天体物理条件下验证了与激波诱导界面不稳定性相关的磁场湍流放大。对磁化等离子体中基本过程的实验阐明，在诸如聚变等离子体与行星科学等多种情境中普遍重要。
引用
@article{arxiv.2108.11919,
title = {Laser astrophysics experiment on the amplification of magnetic fields by shock-induced interfacial instabilities},
author = {Takayoshi Sano and Shohei Tamatani and Kazuki Matsuo and King Fai Farley Law and Taichi Morita and Shunsuke Egashira and Masato Ota and Rajesh Kumar and Hiroshi Shimogawara and Yukiko Hara and Seungho Lee and Shohei Sakata and Gabriel Rigon and Thibault Michel and Paul Mabey and Bruno Albertazzi and Michel Koenig and Alexis Casner and Keisuke Shigemori and Shinsuke Fujioka and Masakatsu Murakami and Youichi Sakawa},
journal= {arXiv preprint arXiv:2108.11919},
year = {2021}
}
备注
17 pages, 12 figures, 3 tables, accepted for publication in PRE