Arbitrary amplitude dust-acoustic double-layers in a warm dusty plasma with suprathermal electrons, two-temperature thermal ions, and drifting dust grains

作者：Tribeche Mouloud^*; Younsi Smain; Zerguini Taha Houssine

来源：Astrophysics and Space Science, 2012, 339(2): 243-247.

DOI：10.1007/s10509-012-1006-9

• Space dusty plasma
• Double-layers
• Suprathermal electrons
• Drifting dust grains

Arbitrary amplitude dust-acoustic double-layers (DA-DLs) in a plasma with suprathermal electrons, two-temperature thermal ions, and warm drifting dust grains are investigated. Our results reveal that the spatial patterns of the DA-DLs are affected by the degree of the electron suprathermality. The electron thermalization involves a decrease of the cold ion component density, for the existence of localized DA-DLs. An increase of the dust drift velocity requires a decrease of kappa (the electron spectral index), for the onset of dust-acoustic double-layers. An increase of the Mach number M leads to an increase of the DL amplitude as well as the corresponding electron spectral index for which the DL occurs.

• 出版日期2012-6