Ghosh Samiran, Chaudhuri Tushar K, Sarkar Susmita, Khan Manoranjan, Gupta M R
Centre for Plasma Studies, Faculty of Science, Jadavpur University, Calcutta 7000 032, India.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Mar;65(3 Pt 2B):037401. doi: 10.1103/PhysRevE.65.037401. Epub 2002 Mar 21.
A dissipation mechanism for the damping of the nonlinear dust ion acoustic wave in a collisionless dusty plasma consisting of nonthermal electrons, ions, and variable charge dust grains has been investigated. It is shown that the collisionless damping due to dust charge fluctuation causes the nonlinear dust ion acoustic wave propagation to be described by the damped Korteweg-de Vries equation. Due to the presence of nonthermal electrons, the dust ion acoustic wave admits both positive and negative potential and it suffers less damping than the dust acoustic wave, which admits only negative potential.
研究了由非热电子、离子和可变电荷尘埃颗粒组成的无碰撞尘埃等离子体中非线性尘埃离子声波的一种耗散机制。结果表明，尘埃电荷涨落引起的无碰撞阻尼使得非线性尘埃离子声波的传播可用阻尼的科特韦格 - 德弗里斯方程来描述。由于非热电子的存在，尘埃离子声波允许存在正电势和负电势，并且它比仅允许存在负电势的尘埃声波受到的阻尼更小。
