Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session PO07: Fundamental Plasmas: Waves, Oscillations, Instabilities
2:00 PM–5:00 PM,
Wednesday, October 19, 2022
Room: 401 ABC
Chair: Stephen Vincena, UCLA
Abstract: PO07.00002 : Exploration of Propagation Window for Ion Acoustic Waves in Multi-cusp Plasma Device*
2:12 PM–2:24 PM
Presenter:
Meenakshee Sharma
(Institute for Plasma Research)
Authors:
Meenakshee Sharma
(Institute for Plasma Research)
Prabhakar Srivastav
(Institute for Plasma Research)
A. D. Patel
(Institute for Plasma Research)
N. Ramasubramanian
(Institute for Plasma Research)
Y. C. Saxena
(Institute for Plasma Research)
Collaboration:
MPD team
An experimental study is performed to explore the window for ion-acoustic wave propagation by changing the various parameters, like plasma density, electron temperature, neutral density, and cusp magnetic field strength. While varying these parameters the propagation of IA wave ceases to exist or gets damp in a certain regime. In a quest for that, the possible causes to make the IA wave damp in plasma and limitations to IA wave propagation are investigated. After an elaborate experimental investigation, it is observed that the IA wave can propagate below the plasma density. When the plasma density reaches this critical value it falls into the non-propagating regime. This suggests that MPD plasma behaves as a low pass filter for IA wave propagation.
*NAP
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