Abstract
Here we present collective Thomson scattering measurements of 1D fast-ion
velocity distribution functions in neutral beam heated TEXTOR plasmas with
sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed
as a consequence of a sawtooth crash. We resolve various directions to the
magnetic field. The fast-ion distribution is found to be anisotropic as expected.
For a resolved angle of 39¿ to the magnetic field we find a drop in the fast-ion
distribution of 20–40%. For a resolved angle of 83¿ to the magnetic field the
drop is no larger than 20%.
(Some figures in this article are in colour only in the electronic version)
Original language | English |
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Article number | 092001 |
Pages (from-to) | 092001-1/8 |
Number of pages | 8 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 52 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2010 |