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20 April 2024

» pubmed » pmid17155690

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Fast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering
H Bindslev ; S K Nielsen ; L Porte ; J A Hoekzema ; S B Korsholm ; F Meo ; P K Michelsen ; S Michelsen ; J W Oosterbeek ; E L Tsakadze ; E Westerhof ; P Woskov ; ;
Date:	17 Nov 2006
Journal:	Phys Rev Lett, 97 (20), 205005
Abstract:	Here we present the first measurements by collective Thomson scattering of the evolution of fast-ion populations in a magnetically confined fusion plasma. 150 kW and 110 Ghz radiation from a gyrotron were scattered in the TEXTOR tokamak plasma with energetic ions generated by neutral beam injection and ion cyclotron resonance heating. The temporal behavior of the spatially resolved fast-ion velocity distribution is inferred from the received scattered radiation. The fast-ion dynamics at sawteeth and the slowdown after switch off of auxiliary heating is resolved in time. The latter is shown to be in close agreement with modeling results.
Source:	PubMed, pmid17155690
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