The structure of weak shocks in quantum plasmas

Details The structure of weak shocks in quantum plasmas The structure of weak shocks in quantum plasmas

2008-01-08

arxiv.org/abs/0801.1295v2

Physics

Plasma Physics

13 pages, 4 figures, version to appear in Physics of Plasmas

Scientific paper

10.1063/1.2894565

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.

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