Bulletin of the American Physical Society
65th Annual Meeting of the APS Division of Plasma Physics
Monday–Friday, October 30–November 3 2023; Denver, Colorado
Session GP11: Poster Session III:
LTP: Measurement, analysis and control of low temperature plasmas
Fundamental: Waves, instabilities, and turbulence
MFE: Stellarators: W7-X, LHD, HSX, CTH, Others; Divertor physics
9:30 AM - 12:30 PM
Tuesday, October 31, 2023
Room: Plaza ABC
Abstract: GP11.00044 : Relativistic and Wave Effects on Confinement in Rotating Magnetic Mirrors*
Presenter:
Ian E Ochs
(Princeton University)
Authors:
Ian E Ochs
(Princeton University)
Vadim R Munirov
(Princeton University)
Nathaniel J Fisch
(Princeton University)
In addition to naturally-occurring wave effects, one can also deploy more auspicious waves in order to improve the plasma confinement through ponderomotive forces. The presence of rotation raises the intriguing possibility of using static perturbations at the plasma edge in order to introduce a propagating wave in the rotating frame [2]. However, the engineering simplicity of such a scheme is accompanied by subtleties in the analysis of the wave polarization. We examine the root of this problem by adopting a simple slab model, showing how the choice of potential model in the lab frame can change the wave polarization and amplitude in the plasma frame, and thus completely change the form of the ponderomotive force [3].
[1] I. E. Ochs, V. R. Munirov, and N. J. Fisch, “Confinement time and ambipolar potential in a relativistic mirror-confined plasma,” Physics of Plasmas, 30, 052508 (2023).
[2] T. Rubin, J. M. Rax, and N. J. Fisch, “Magnetostatic ponderomotive potential in rotating plasma,” Physics of Plasmas, 30, 052501 (2023).
[3] I. E. Ochs and N. J. Fisch, “The Critical Role of Isopotential Surfaces for Magnetostatic Ponderomotive Forces.” arXiv 2305.09768. (2023).
*This work was supported by ARPA-E Grant No. DE-AR0001554, and by the DOE Fusion Energy Sciences Postdoctoral Research Program administered under DE-SC0014664.
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