Estimation of synchrotron radiation and limiting energy of high-energy runaway electrons in tokamak stochastic magnetic fields
- Universidad Carlos III de Madrid, Avenida de la Universidad 30, 28911 Madrid (Spain)
The increase of synchrotron radiation power emitted by relativistic electrons moving across stochastic magnetic fields in tokamak geometry has been investigated. It will be shown that the guiding-center motion along the magnetic-field lines leads to an enhancement of the electron radiation which, in case of strong turbulence, can dominate the whole radiation process. A threshold stochastic magnetic fluctuation level, b-tilde>({delta}{sub perpendicular}/R){sup 1/2} ({delta}{sub perpendicular} is the perpendicular correlation length of the magnetic-field fluctuations), has been found for turbulence-dominated radiation. The implications that these results can have when estimating the final energy that runaway electron beams confined in tokamaks can reach are also discussed.
- OSTI ID:
- 20782450
- Journal Information:
- Physics of Plasmas, Vol. 13, Issue 1; Other Information: DOI: 10.1063/1.2158150; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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