Non-thermal effects on decay of Lorentzian Trivelpiece-Gould waves. (1st March 2022)

• Record Type: Journal Article
• Authors: Lee, Myoung-Jae; Park, In Sun; Hong, Sunghoon; Chung, Kyu-Sun; Jung, Young-Dae
• Is Part Of: Europhysics letters. Volume 137:Number 5(2022)
• Publication Date: 2022-03-01
• Subjects: Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/ac5a88
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: The non-thermal effects on the low-frequency ion-acoustic Trivelpiece-Gould (TG) wave are examined in a Lorentzian weakly ionized dusty plasma waveguide such as the Hanyang University Diverter Plasma Simulator-2 (DiPS-2). By using the normal mode analysis and the separation of variables, the dispersion relation and the damping modes are obtained for the low-frequency ion-acoustic TG wave in a Lorentzian weakly ionized dusty plasma waveguide. With typical conditions of DiPS-2 such as plasma density, ion-neutral collision frequency, electron temperature, and ion temperature, the following is found: 1) the magnitude of the damping rates of the low-frequency ion-acoustic TG wave in Lorentzian plasmas are always greater than those in Maxwellian plasmas; 2) the ion-acoustic TG wave for the first harmonic mode can also be existed for the shortest period of time; 3) the ion-acoustic TG wave in a smaller waveguide can be existed for a wide range of the wave number; and 4) the non-thermal character of a Lorentzian plasma enhances the anti-symmetric behavior of the damping rate for the ion-acoustic TG wave.