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arXiv 0801.1295physics.plasm-ph
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量子等离子体中弱激波的结构

The structure of weak shocks in quantum plasmas

Vitaly Bychkov, Mikhail Modestov, Mattias Marklund

摘要:

考虑到热传导引起的耗散项和玻姆势引起的色散量子项,研究了量子等离子体中弱激波的结构。与没有耗散的量子系统不同,即使是很小的热传导也可能导致稳定的激波结构。在零量子效应的极限下,恢复了弱激波的单调Burgers解.尽管如此,即使是很小的量子项也会使结构变得非单调,因为冲击波会驱动一列训练振荡进入初始等离子体。振荡与激波一起传播。与热传导相比,随着玻姆势的作用增加,振荡变得更强。这些结果对于激光-等离子体相互作用,例如惯性约束聚变等离子体,以及天体物理环境和凝聚态系统都具有重要意义。

英文摘要:

The structure of a weak shock in a quantum plasma is studied, taking into account both dissipation terms due to thermal conduction and dispersive quantum terms due to the Bohm potential. Unlike quantum systems without dissipations, even a small thermal conduction may lead to a stationary shock structure. In the limit of zero quantum effects, the monotonic Burgers solution for the weak shock is recovered. Still, even small quantum terms make the structure non-monotonic with the shock driving a train of oscillations into the initial plasma. The oscillations propagate together with the shock. The oscillations become stronger as the role of Bohm potential increases in comparison with thermal conduction. The results could be of importance for laser-plasma interactions, such as inertial confinement fusion plasmas, and in astrophysical environments, as well as in condensed matter systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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