The periodic, quasi-periodic and solitonic properties of ion-acoustic wave (IAW) with ion pressure anisotropy are examined in a magnetized nonthermal electron-ion plasma. Using CGL theory, double adiabatic equation of state for ions is assumed and inertialess electrons are considered to follow nonthermal \(\kappa\)-distribution. A damping in the system due to ions and neutral atoms collision is also included in the presence of ion pressure anisotropy. The reductive perturbation (RP) method is used to derive Kortewge-de Vries (KdV) equation in a collisionless plasma case and the damped KdV equation with collisional effects for IAW propagation in a magnetized plasma. The effects of anisotropic ion pressure and spectral index \(\kappa\) for nonthermal electrons on the formation of quasi-periodic nonlinear IAW structures in the presence of external periodic force and their changing from period doubling to multi-periods are investigated in detail.

在磁化非热电子离子等离子体中研究了具有离子压力各向异性的离子声波 (IAW) 的周期、准周期和孤子特性。使用 CGL 理论，假设离子的双绝热状态方程，并且认为无惯性电子遵循非热\(\kappa\)分布。由于离子和中性原子碰撞而导致的系统阻尼也包含在离子压力各向异性的存在中。还原微扰 (RP) 方法用于推导无碰撞等离子体情况下的 Kortewge-de Vries (KdV) 方程以及磁化等离子体中 IAW 传播的具有碰撞效应的阻尼 KdV 方程。详细研究了在外部周期力存在下各向异性离子压和非热电子谱指数\(\kappa\)对准周期非线性IAW结构形成的影响及其从倍周期到多周期的变化。