Spectroscopic diagnostics of superthermal electrons with high-number harmonic EC radiation in tokamak reactor plasmas
1 Tokamak Physics Institute, NRC Kurchatov Institute, Moscow, Russia
2 National Research Nuclear University MEPhI, Moscow, Russia
a Corresponding author: Minashin_PV[at]nrcki.ru
Published online: 12 March 2015
A method of spectroscopic diagnostics of the average perpendicular-to-magnetic-field momentum of the superthermal component of the electron velocity distribution (EVD), based on the high-number-harmonic electron cyclotron (EC) radiation, is suggested for nuclear fusion-reactor plasmas under condition of a strong auxiliary heating (e.g. in tokamak DEMO, a next step after tokamak ITER). The method is based on solving an inverse problem for reconstruction of the EVD in parallel and perpendicular-to-magnetic-field components of electron momentum at high and moderate energies responsible for the emission of the high-number-harmonic EC radiation.
© Owned by the authors, published by EDP Sciences, 2015
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