Resilience of Quasi-Isodynamic Stellarators against Trapped-Particle Instabilities
- 12 June 2012
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 108 (24)
- https://doi.org/10.1103/physrevlett.108.245002
Abstract
It is shown that in perfectly quasi-isodynamic stellarators, trapped particles with a bounce frequency much higher than the frequency of the instability are stabilizing in the electrostatic and collisionless limit. The collisionless trapped-particle instability is therefore stable as well as the ordinary electron-density-gradient-driven trapped-electron mode. This result follows from the energy balance of electrostatic instabilities and is thus independent of all other details of the magnetic geometry.This publication has 16 references indexed in Scilit:
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