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Title: Wave-particle interactions in rotating mirrors

Abstract

Wave-particle interactions in ExB rotating plasmas feature an unusual effect: particles are diffused by waves in both potential energy and kinetic energy. This wave-particle interaction generalizes the alpha channeling effect, in which radio frequency waves are used to remove alpha particles collisionlessly at low energy. In rotating plasmas, the alpha particles may be removed at low energy through the loss cone, and the energy lost may be transferred to the radial electric field. This eliminates the need for electrodes in the mirror throat, which have presented serious technical issues in past rotating plasma devices. A particularly simple way to achieve this effect is to use a high azimuthal mode number perturbation on the magnetic field. Rotation can also be sustained by waves in plasmas without a kinetic energy source. This type of wave has been considered for plasma centrifuges used for isotope separation. Energy may also be transferred from the electric field to particles or waves, which may be useful for ion heating and energy generation.

Authors:
;  [1]
  1. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08540 (United States)
Publication Date:
OSTI Identifier:
21537854
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 5; Other Information: DOI: 10.1063/1.3567417; (c) 2011 American Institute of Physics; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALPHA PARTICLES; ELECTRIC FIELDS; ISOTOPE SEPARATION; MIRRORS; PARTICLE INTERACTIONS; PLASMA CENTRIFUGES; RADIOWAVE RADIATION; ROTATING PLASMA; CENTRIFUGES; CHARGED PARTICLES; CONCENTRATORS; ELECTROMAGNETIC RADIATION; INTERACTIONS; IONIZING RADIATIONS; PLASMA; RADIATIONS; SEPARATION PROCESSES

Citation Formats

Fetterman, Abraham J, and Fisch, Nathaniel J. Wave-particle interactions in rotating mirrors. United States: N. p., 2011. Web. doi:10.1063/1.3567417.
Fetterman, Abraham J, & Fisch, Nathaniel J. Wave-particle interactions in rotating mirrors. United States. https://doi.org/10.1063/1.3567417
Fetterman, Abraham J, and Fisch, Nathaniel J. 2011. "Wave-particle interactions in rotating mirrors". United States. https://doi.org/10.1063/1.3567417.
@article{osti_21537854,
title = {Wave-particle interactions in rotating mirrors},
author = {Fetterman, Abraham J and Fisch, Nathaniel J},
abstractNote = {Wave-particle interactions in ExB rotating plasmas feature an unusual effect: particles are diffused by waves in both potential energy and kinetic energy. This wave-particle interaction generalizes the alpha channeling effect, in which radio frequency waves are used to remove alpha particles collisionlessly at low energy. In rotating plasmas, the alpha particles may be removed at low energy through the loss cone, and the energy lost may be transferred to the radial electric field. This eliminates the need for electrodes in the mirror throat, which have presented serious technical issues in past rotating plasma devices. A particularly simple way to achieve this effect is to use a high azimuthal mode number perturbation on the magnetic field. Rotation can also be sustained by waves in plasmas without a kinetic energy source. This type of wave has been considered for plasma centrifuges used for isotope separation. Energy may also be transferred from the electric field to particles or waves, which may be useful for ion heating and energy generation.},
doi = {10.1063/1.3567417},
url = {https://www.osti.gov/biblio/21537854}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 18,
place = {United States},
year = {2011},
month = {5}
}