Effect of Critical Beam Radius on Self-focusing of cosh-Gaussian Laser Beams in Collisionless Magnetized Plasma  

作　　者：T.U.Urunkar S.D.Patil A.T.Valkunde B.D.Vhanmore K.M.Gavade M.V.Takale 

机构地区：[1]Department of Physics, Shivaji University [2]Department of Physics, Devchand College

出　　处：《Communications in Theoretical Physics》2018年第8期220-224,共5页理论物理通讯（英文版）

摘　　要：Effect of critical beam radius on self-focusing of cosh-Gaussian laser beams in collisionless magnetized plasma under ponderomotive nonlinearity forms the main core of present work. To investigate propagation dynamics of cosh-Gaussian laser beams in collisionless magnetized plasma, well established parabolic equation approach under WKB and paraxial approximations is employed. Our study is crucially pivoted on the concept of critical curve and subsequent determination of numerical interval for decentered parameter to sustain the competition between diffraction and self-focusing during the propagation of laser beam. Additionally, in the present study an interesting feature in the self-focusing region of the critical curve has been attempted for different values of decentered parameter.

关 键 词：SELF-FOCUSING cosh-Gaussian magnetized plasma beam radius decentered parameter 

分 类 号：O53[理学—等离子体物理]