@article{5290df9172514166a18a15ac0dfd44b8,
title = "Efficient generation of energetic ions in multi-ion plasmas by radio-frequency heating",
abstract = "We 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 He-3 ions to high energies in dedicated hydrogendeuterium mixtures. Simultaneously, effective plasma heating is observed, as a result of the slowing-down of the fast He-3 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, He-3-rich solar flares.",
keywords = "HE-3-RICH SOLAR-FLARES, MODE CONVERSION, CYCLOTRON RANGE, FUSION, JET, FREQUENCY, TOKAMAK, PHYSICS",
author = "Kazakov, {Ye. O.} and Kiptily, {V. G.} and Y. Lin and M. Nocente and Y. Baranov and R. Bilato and Faustin, {J. M.} and Felton, {R. C.} and Ph. Jacquet and {Van Schoor}, M. and Marmar, {E. S.} and Baek, {S. G.} and P. Xu and O. Asunta and M. Groth and J. Karhunen and T. Koskela and T. Kurki-Suonio and B. Lomanowski and T. Makkonen and J. Miettunen and D. Moulton and Santala, {M. I. K.} and J. Uljanovs and J. Varje and C. Boyd and S. Collins and M. Hughes and S. Lee and Li Li and G. Liu and Y. Liu and Lopez, {J. M.} and S. Moradi and Na, {Y. S.} and S. Ranjan and A. Salmi and J. Simpson and A. Sinha and Smith, {T. J.} and P. Thomas and Lieming Yao and Wei Zhang and Y. Zhou and L. Aho-Mantila and M. Airila and J. Eriksson and Eriksson, {L. G.} and X. Gao and A. Hakola and {JET Contributors} and {Alcator C-Mod Team}",
note = "A. J{\"a}rvinen ja S. K. Sipil{\"a} ovat my{\"o}s Aalto-yliopistosta. J{\"a}t{\"a}n odottamaan, ett{\"a} pyyt{\"a}v{\"a}t lis{\"a}{\"a}m{\"a}{\"a}n itsens{\"a} kirjoittajiksi, koska en ole varma, kenest{\"a} on kysymys (Jari 18.6.2018).",
year = "2017",
month = oct,
doi = "10.1038/NPHYS4167",
language = "English",
volume = "13",
pages = "973--978",
journal = "Nature Physics",
issn = "1745-2473",
publisher = "Nature Publishing Group",
number = "10",
}