Effects of ICRH on the dynamics of fast particle excited alfven eigenmodes
2007 (English)In: Radio Frequency Power in Plasmas, American Institute of Physics (AIP), 2007, Vol. 933, 455-458 p.Conference paper (Refereed)
ICRH is often used in experiments to simulate destabilization of Alfvén eigenmodes by thermonuclear α-particles. Whereas the slowing down distribution of α-particles is nearly isotropic, the ICRH creates an anisotropic distribution function with non-standard orbits. The ICRH does not only build up gradients in phase space, which destabilizes the AEs, but it also provides a strong phase decorrelation mechanism between ions and AEs. Renewal of the distribution function by thermonuclear reactions and losses of α-particles to the wall lead to a continuous drive of the AEs. Simulations of the non-linear dynamics of AEs and the impact they have on the heating profile due to particle redistribution are presented.
Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2007. Vol. 933, 455-458 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 933
toroidal alfven eigenmodes, alpha-particles, ICRH, monte-carlo method, SELFO
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-25593DOI: 10.1063/1.2800530ISI: 000251153300091ScopusID: 2-s2.0-36849030205ISBN: 978-073540444-1ISBN: 0735404445OAI: oai:DiVA.org:kth-25593DiVA: diva2:370579
17th Topical Conference on Radio Frequence Power in Plasmas Clearwater, FL, MAY 07-09, 2007, United States
QC 201011172010-11-172010-10-272014-11-12Bibliographically approved