Bulletin of the American Physical Society
76th Annual Gaseous Electronics Conference
Volume 68, Number 9
Monday–Friday, October 9–13, 2023; Michigan League, Ann Arbor, Michigan
Session IT4: Poster Session I; Exhibition & Coffee (4:00pm-6:00pm)
4:00 PM,
Tuesday, October 10, 2023
Room: Michigan League, Ballroom
Abstract: IT4.00010 : Instability-enhanced friction in multi-ion species plasmas*
Presenter:
Moises A Angulo Enriquez
(University of Michigan)
Authors:
Moises A Angulo Enriquez
(University of Michigan)
Scott D Baalrud
(University of Michigan)
Timothy R Younkin
(Oak Ridge National Laboratory)
Adrian Lopez
(Oak Ridge National Laboratory)
ion-streaming instabilities could occur and thus increase the friction between ion species through wave-particle scattering. The stability of the plasma has been found to depend on the ion concentrations, electron-ion temperature ratios, flow difference, and mass ratios. This was studied under the context of sheaths, whereby the flow difference between ion species is created through the presheath’s electric field. The instability-enhanced friction causes individual sound speeds to merge toward a system sound speed and dictates the plasma flux to the boundaries. The friction force can be calculated by taking the momentum moment of an instability-enhanced collision operator and then comparing it with PIC simulations. Moving forward, the presence of a magnetic field will be integrated into a PIC model to investigate how the instabilities and transport are affected and whether the dielectric function should be modified to account for such effects.
*This research is supported by the U.S. Department of Energy Isotope Program, managed by the Office of Science for Isotope R&D and Production.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700