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dc.contributor.authorKazakov, Ye.O.
dc.contributor.authorOngena, J.
dc.contributor.authorWright, S.J.
dc.contributor.authorWukith, S.J.
dc.contributor.authorLerche, E.
dc.contributor.authorMantisen, Mervi
dc.contributor.authorvan Eester, D.
dc.contributor.authorCraciunescu, T.
dc.contributor.authorKiptily, V.G.
dc.contributor.authorLin, Y.
dc.contributor.authorNocente, M.
dc.contributor.authorNabais, F.
dc.contributor.authorNave, M.F.F.
dc.contributor.authorBaranov, Y.
dc.contributor.authorBielecki, J.
dc.contributor.authorBilato, R.
dc.contributor.authorBobkov, V.
dc.contributor.authorCrombé, K.
dc.contributor.authorCzarnecka, A.
dc.contributor.authorFaustin, J.
dc.contributor.authorFelton, R.
dc.contributor.authorFitzgerald, M.
dc.contributor.authorGallart, Daniel
dc.contributor.authorGiacomelli, L.
dc.contributor.authorGolfinopoulos, T.
dc.contributor.authorHubbard, A.
dc.contributor.authorJacquet, Ph.
dc.contributor.authorJohnson, T.
dc.contributor.authorLennholm, M.
dc.contributor.authorLoarer, T.
dc.contributor.authorPorkolab, M.
dc.contributor.authorSharapov, S.
dc.contributor.authorValcarcel, D.
dc.contributor.authorvan Schoor, M.
dc.contributor.authorWeisen, H.
dc.contributor.authorJET Contributors
dc.contributor.authorAlcator C-Mod Team
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationKazakov, Y. [et al.]. Efficient generation of energetic ions in multi-ion plasmas by radio-frequency heating. "Nature Physics", 19 Juny 2017.
dc.description.abstractWe describe a new technique for the efficient generation of high-energy ions with electromagnetic ion cyclotron waves in multi-ion plasmas. The discussed ‘three-ion’ scenarios are especially suited for strong wave absorption by a very low number of resonant ions. To observe this effect, the plasma composition has to be properly adjusted, as prescribed by theory. We demonstrate the potential of the method on the world-largest plasma magnetic confinement device, JET (Joint European Torus, Culham, UK), and the high-magnetic-field tokamak Alcator C-Mod (Cambridge, USA). The obtained results demonstrate efficient acceleration of 3He ions to high energies in dedicated hydrogen–deuterium mixtures. Simultaneously, effective plasma heating is observed, as a result of the slowing-down of the fast 3He ions. The developed technique is not only limited to laboratory plasmas, but can also be applied to explain observations of energetic ions in space-plasma environments, in particular, 3He-rich solar flares.
dc.description.sponsorshipThis paper is dedicated to the late P. E. M. Vandenplas, founder and first director of LPP-ERM/KMS, in recognition of his lifelong outstanding commitment to fusion research, in particular to ICRH. The support from the JET and Alcator C-Mod Teams is warmly acknowledged. We are grateful to A. Cardinali, C. Castaldo, R. Dumont, J. Eriksson, T. Fülöp, C. Giroud, C. Hellesen, S. Menmuir and M. Schneider for fruitful discussions. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement no. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was also supported by the US DoE, Office of Science, Office of Fusion Energy Sciences, SciDAC Center for Simulation of Wave Plasma Interactions under DE-FC02-01ER54648 and the User Facility Alcator C-Mod under DE-FC02-99ER54512. The Alcator C-Mod Team author list is reproduced from ref. 12. The JET Contributors author list is reproduced from ref. 33.
dc.format.extent10 p.
dc.publisherNature Publishing Group
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshPlasma dynamics
dc.subject.lcshPlasma heating
dc.subject.otherAstrophysical plasmas
dc.subject.otherMagnetically confined plasmas
dc.titleEfficient generation of energetic ions in multi-ion plasmas by radio-frequency heating
dc.subject.lemacTècniques de plasma
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/633053/EU/Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium/EUROfusion
local.citation.publicationNameNature Physics

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