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Title: Wave-particle Interactions In Rotating Mirrors

Abstract

Wave-particle interactions in E×B 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:
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1001684
Report Number(s):
PPPL-4593
TRN: US1101049
DOE Contract Number:  
DE-ACO2-09CH11466
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALPHA PARTICLES; CHANNELING; ELECTRIC FIELDS; ELECTRODES; HEATING; ISOTOPE SEPARATION; KINETIC ENERGY; LOSS CONE; MAGNETIC FIELDS; MIRRORS; PLASMA CENTRIFUGES; POTENTIAL ENERGY; ROTATING PLASMA; ROTATION; Rotating Plasmas, Wave Interaction, Particles

Citation Formats

Abraham J. Fetterman and Nathaniel J. Fisch. Wave-particle Interactions In Rotating Mirrors. United States: N. p., 2011. Web. doi:10.2172/1001684.
Abraham J. Fetterman and Nathaniel J. Fisch. Wave-particle Interactions In Rotating Mirrors. United States. https://doi.org/10.2172/1001684
Abraham J. Fetterman and Nathaniel J. Fisch. 2011. "Wave-particle Interactions In Rotating Mirrors". United States. https://doi.org/10.2172/1001684. https://www.osti.gov/servlets/purl/1001684.
@article{osti_1001684,
title = {Wave-particle Interactions In Rotating Mirrors},
author = {Abraham J. Fetterman and Nathaniel J. Fisch},
abstractNote = {Wave-particle interactions in E×B 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 = {10.2172/1001684},
url = {https://www.osti.gov/biblio/1001684}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {1}
}