Enhancement of Ablative Rayleigh-Taylor Instability Growth by Thermal Conduction Suppression in a Magnetic Field,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Enhancement of Ablative Rayleigh-Taylor Instability Growth by Thermal Conduction Suppression in a Magnetic Field
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-10-12 , DOI: 10.1103/physrevlett.127.165001
Kazuki Matsuo ₁ , Takayoshi Sano ₁ , Hideo Nagatomo ₁ , Toshihiro Somekawa _{1,

2} , King Fai Farley Law ₁ , Hiroki Morita ₁ , Yasunobu Arikawa ₁ , Shinsuke Fujioka ₁

Affiliation

Ablative Rayleigh-Taylor instability growth was investigated to elucidate the fundamental physics of thermal conduction suppression in a magnetic field. Experiments found that unstable modulation growth is faster in an external magnetic field. This result was reproduced by a magnetohydrodynamic simulation based on a Braginskii model of electron thermal transport. An external magnetic field reduces the electron thermal conduction across the magnetic field lines because the Larmor radius of the thermal electrons in the field is much shorter than the temperature scale length. Thermal conduction suppression leads to spatially nonuniform pressure and reduced thermal ablative stabilization, which in turn increases the growth of ablative Rayleigh-Taylor instability.

中文翻译：

通过磁场中的热传导抑制增强烧蚀瑞利-泰勒不稳定性增长

研究了烧蚀性瑞利-泰勒不稳定性增长，以阐明磁场中热传导抑制的基本物理学。实验发现，在外部磁场中不稳定的调制增长更快。该结果由基于电子热传输的 Braginskii 模型的磁流体动力学模拟再现。外部磁场降低了穿过磁场线的电子热传导，因为场中热电子的拉莫尔半径远小于温标长度。热传导抑制会导致空间压力不均匀并降低热烧蚀稳定性，这反过来又会增加烧蚀瑞利-泰勒不稳定性的增长。

更新日期：2021-10-12

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11