Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

High Energy, Particle, and Nuclear Physics

Abstract ID: ANPA2023-N00082

Abstract:

ANPA2023-N00082: Dust charge fluctuation and ion acoustic wave propagation in dusty plasma with q-nonextensive hot and Maxwellian cold electrons

Authors:

• Saroj Pandeya; Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu 44613, Nepal

• Subash Regmi; Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu 44613, Nepal

• Sushil Sedhai;

• Shiva Bikram Thapa;

• Suresh Basnet;

• Raju_x000D_ Khana;

We have employed the self-consistent kinetic theory to study the linear dispersion relation of_x000D_ ion acoustic waves in four-component plasma consisting of nonextensive hot electrons,_x000D_ Maxwellian cold electrons, positive ions, and dust particles. The dust charging process with_x000D_ the modified ion acoustic wave damping, as well as its unstable mode, has been graphically_x000D_ illustrated. It is found that the dust charging mechanism depends on the density of hot_x000D_ electrons, the degree of nonextensive electron distribution, and the temperature ratio of hot_x000D_ to cold electrons. It is shown that the damping and instability rates of ion acoustic waves due_x000D_ to dust charge fluctuations explicitly depend on the choice of electron distribution and the_x000D_ magnitude of dusty plasma parameters. In addition, we have studied the ion acoustic Landau_x000D_ damping in the absence of dust particles. It is found that the weak damping region broadens,_x000D_ while the strong damping region shrinks and is shifted toward the short wavelength region_x000D_ for the increase in the temperature ratio of hot to cold electrons.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00082