Double-layer shocks in a magnetized quantum plasma

Details Double-layer shocks in a magnetized quantum plasma Double-layer shocks in a magnetized quantum plasma

2010-04-19

arxiv.org/abs/1004.3181v2

Physical Review E 82, 037401 (2010)

Physics

Plasma Physics

4 pages, 1 figure (to appear in Physical Review E)

Scientific paper

The formation of small but finite amplitude electrostatic shocks in the propagation of quantum ion-acoustic waves (QIAWs) obliquely to an external magnetic field is reported in a quantum electron-positron-ion (e-p-i) plasma. Such shocks are seen to have double-layer (DL) structures composed of the compressive and accompanying rarefactive slow-wave fronts. Existence of such DL shocks depends critically on the quantum coupling parameter $H$ associated with the Bohm potential and the positron to electron density ratio $\delta$. The profiles may, however, steepen initially and reach a steady state with a number of solitary waves in front of the shocks. Such novel DL shocks could be a good candidate for particle acceleration in intense laser-solid density plasma interaction experiments as well as in compact astrophysical objects, e.g., magnetized white dwarfs.

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