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An iterative method to include spatial dispersion for waves in nonuniform plasmas using wavelet decomposition
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik.ORCID-id: 0000-0003-4343-6325
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik.ORCID-id: 0000-0002-7142-7103
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik.
2016 (engelsk)Inngår i: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 775, nr 1, artikkel-id 012016Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A novel method for solving wave equations with spatial dispersion is presented, suitable for applications to ion cyclotron resonance heating. The method splits the wave operator into a dispersive and a non-dispersive part. The latter can be inverted with e.g. finite element methods. The spatial dispersion is evaluated using a wavelet representation of the dielectric kernel and added by means of iteration. The method has been successfully tested on a low frequency kinetic Alfvén wave with second order Larmor radius effects in a nonuniform plasma slab.

sted, utgiver, år, opplag, sider
2016. Vol. 775, nr 1, artikkel-id 012016
Emneord [en]
Cyclotron resonance, Finite element method, Fusion reactions, Iterative methods, Wave equations, Wavelet decomposition, Ion cyclotron resonance heating, Larmor radius effects, Nonuniform plasma, Second orders, Solving wave equations, Spatial dispersion, Wave operators, Wavelet representation, Dispersion (waves)
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Identifikatorer
URN: urn:nbn:se:kth:diva-201866DOI: 10.1088/1742-6596/775/1/012016Scopus ID: 2-s2.0-85009809630OAI: oai:DiVA.org:kth-201866DiVA, id: diva2:1079327
Konferanse
29 August 2016 through 2 September 2016
Merknad

QC 20170308

Tilgjengelig fra: 2017-03-08 Laget: 2017-03-08 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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