Non-linear Alfvén eigenmode dynamics of a burning plasma in the presence of ion cyclotron resonance heating
2006 (English)In: EPS Conf. Plasma Phys., EPS, 2006, 1792-1795 p.Conference paper (Refereed)
Alfvén eigenmodes (AEs) excited by α particles in a burning plasma can degrade the heating efficiency by spatial redistribution of the resonant α particles. Changes of the orbit invariants in phase space by collisions and other waves, such as magnetosonic waves during ion cyclotron resonance heating (ICRH), lead to changes in the phase between the αs and AEs, causing a decorrelation of the interactions. ICRH lead to an increased decorrelation of the AE interactions and hence a stronger radial redistribution of the thermonuclear α particles by the 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 and a radial redistribution of the α particles. The redistribution results in a degradation of the heating efficiency.
Place, publisher, year, edition, pages
2006. 1792-1795 p.
, 33rd EPS Conference on Plasma Physics 2006, EPS 2006, 3
Burning plasmas, Decorrelations, Eigen modes, Heating efficiencies, In-phase, Ion cyclotron resonance heating, Magnetosonic waves, Radial redistribution, Cyclotron resonance, Phase space methods, Plasmas
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-155091ScopusID: 2-s2.0-84872662424ISBN: 9781622763337OAI: oai:DiVA.org:kth-155091DiVA: diva2:760757
33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006, 19-23 June 2006, Rome, Italy
QC 201411042014-11-042014-10-302014-11-04Bibliographically approved