This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1002/ctpp.200900045 in citations.
Asymptotical theory of runaway electron diffusion due to magnetic turbulence in tokamak plasma
Asymptotical theory of runaway electron diffusion due to magnetic turbulence in tokamak plasma
Asymptotic theory of transport of runaway electrons in a toroidal plasma in the presence of small-scale magnetic turbulence is proposed. It is based on relativistic Hamiltonian guiding center equations for runaway electrons in toroidal plasmas. Using the asymptotical analysis the explicit relation b...
Saved in:
Personal Name(s): | Abdullaev, S.S. |
---|---|
Finken, K.H. / Kudyakov, T. / Lehnen, M. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Contributions to plasma physics, 50 (2010) S. 929 - 941 |
Imprint: |
Weinheim
Wiley-VCH
2010
|
Physical Description: |
929 - 941 |
DOI: |
10.1002/ctpp.200900045 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Contributions to Plasma Physics
50 |
Subject (ZB): | |
Publikationsportal JuSER |
Asymptotic theory of transport of runaway electrons in a toroidal plasma in the presence of small-scale magnetic turbulence is proposed. It is based on relativistic Hamiltonian guiding center equations for runaway electrons in toroidal plasmas. Using the asymptotical analysis the explicit relation between the spectral (m, n)-components of perturbation Hamiltonian and the corresponding spectrum of the magnetic turbulence is found. This relation depends only on a few parameters of runaway orbits and magnetic surfaces. The radial profiles of runaway diffusion coefficients are found employing two methods, the quasilinear approximation and the direct calculations using a fast running mapping. The dependence of the shielding factor of the runaway electron parameters and the turbulence spectra is discussed. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |