Arbitrary amplitude kinetic Alfven solitary waves and double layers in a non-Maxwellian plasma

作者：Gogoi Runmoni^*; Khan Manoranjan

来源：Physics of Plasmas, 2010, 17(11): 112311.

DOI：10.1063/1.3506820

To investigate the existence of kinetic Alfven wave solitons, warm adiabatic ions and kappa distributed electrons are considered in a magnetized plasma The kappa distribution (having the spectral index kappa) is a velocity distribution that has a high energy tail but approaches the Maxwellian when kappa ->infinity In this work, by using the Sagdeev pseudopotential method, an exact analytical expression for arbitrary amplitude solitary kinetic Alfven wave is derived For different sets of plasma parameter values, the Sagdeev potential Psi (phi) has been calculated numerically It is found that the spectral index kappa plays a significant role in determining the shape and size of the solitary waves and double layers

• 出版日期2010-11