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Nonlinear dynamics in dusty plasmas subjected to photo-discharging

Published online by Cambridge University Press:  19 December 2024

Michael McKinlay Open the ORCID record for Michael McKinlay [Opens in a new window] ,
Edward Thomas Jr Open the ORCID record for Edward Thomas Jr [Opens in a new window]  and
Saikat Chakraborty Thakur
Michael McKinlay*
Affiliation:
Department of Physics and Astronomy, Ball State University, Muncie, IN 47306, USA
Edward Thomas Jr
Affiliation:
Physics Department, Auburn University, Auburn, AL 39849, USA
Saikat Chakraborty Thakur
Affiliation:
Physics Department, Auburn University, Auburn, AL 39849, USA
*
†Email address for correspondence: [email protected]
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Abstract

Experimental research into the control of particle charge in dusty plasmas conducted at Auburn University indicates that photocurrents generated by exposing dust to intense, near-ultraviolet light can provide a reliable and novel method of independently controlling dust charge without radically altering the background plasma; the experiment also showed that some particles may respond differently to this photo-discharge, with some exhibiting highly periodic responses to the discharge and others exhibiting chaotic behaviour. Since the dust particles in the experiment were a polydisperse sample of different sizes and shapes, particle geometry may play a role in explaining this difference. Simulations of particle discharge and dynamics are used in an attempt to reproduce experimental results and investigate a possible correlation between particle symmetry and dynamic periodicity.

Keywords

dusty plasmasplasma nonlinear phenomenaplasma simulation
Type
Research Article
Information
Journal of Plasma Physics , Volume 90 , Issue 6 , December 2024 , 905900617
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Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press

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