论文标题
非热等离子体中的一阶和二阶尘埃离子流氓波浪
First and second-order dust-ion-acoustic rogue waves in non-thermal plasma
论文作者
论文摘要
A nonlinear Schrödinger equation (NLSE) has been derived by employing reductive perturbation method for investigating the modulational instability of dust-ion-acoustic waves (DIAWs) in a four-component plasma having stationary negatively charged dust grains, inertial warm ions, and inertialess non-thermal electrons and positrons.据观察，在考虑的考虑因素中，血浆系统支持调制稳定和不稳定的域，这些结构域取决于DIAW的NLSE的分散和非线性系数的符号。还发现，非线性以及二阶和二阶流氓波的高度和宽度随着电子和正电子的非热性而增加。我们目前的研究与空间等离子体中的观察结果的相关性是指前的。
A nonlinear Schrödinger equation (NLSE) has been derived by employing reductive perturbation method for investigating the modulational instability of dust-ion-acoustic waves (DIAWs) in a four-component plasma having stationary negatively charged dust grains, inertial warm ions, and inertialess non-thermal electrons and positrons. It is observed that under consideration, the plasma system supports both modulationally stable and unstable domains, which are determined by the sign of the dispersive and nonlinear coefficients of NLSE, of the DIAWs. It is also found that the nonlinearity as well as the height and width of the first and second-order rogue waves increases with the non-thermality of electron and positron. The relevancy of our present investigation to the observations in space plasmas is pinpointed.
