Dissipative kinetic Alfven solitary waves resulting from viscosity

作者：Choi C R^*; Woo M H; Kang S B; Min K W; Hwang J; Park Y D

来源：Physics of Plasmas, 2013, 20(11): 112304.

DOI：10.1063/1.4834495

Nonlinear small-amplitude kinetic Alfven solitary waves (KASWs) are investigated with their "anomalous" kinetic viscosity effect on electrons. It is found that the structure of a hump-type KASW solution develops into a shock-type (or double layer) KASW solution for large amplitude KASWs when viscosity exists. For small amplitude KASWs, the Korteweg-de Vries (KdV) equation with an approximate pseudopotential was solved, and it is found that the hump-type KASWs develop into oscillating shock-type (kink-type) KASWs. It is also found that the oscillating scale of this structure is related to the propagation velocity and plasma beta, while the damping scale is inversely proportional to the viscosity.

• 出版日期2013-11