Open AccessЭкспериментальное определение дисперсионного соотношения излучения плазмы на частотах ионного циклотронного резонанса и его гармоник в токамаке
Author(s) -
Л.Г. Аскинази,
Г.И. Абдуллина,
А.А. Белокуров,
Н.А. Жубр,
В.А. Корнев,
С.В. Крикунов,
С.В. Лебедев,
Д.B. Разуменко,
А.С. Тукачинский
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.05.50667.18585
Subject(s) - atomic physics , physics , cyclotron , dispersion relation , tokamak , plasma , harmonics , ion , electromagnetic electron wave , lower hybrid oscillation , magnetic field , ion cyclotron resonance , electromagnetic radiation , computational physics , optics , nuclear physics , quantum mechanics , voltage
The study of the spectral properties of the electromagnetic radiation in the ion cyclotron frequency range from the TUMAN-3M tokamak plasma in the neutral beam injection (NBI) heating mode has been performed. The spectrum of this emission consists of several (up to four) narrow lines corresponding to different harmonics of the ion cyclotron resonance of the injected fast ions in the center of the plasma. Wave vectors corresponding to individual spectral lines are determined from the delays of signals from spatially separated probes. It is shown that under the assumption that the measured frequencies and wave vectors are described by a common dispersion relation, the observed emission can be explained by the appearance in the plasma an unstable fast magnetosonic wave propagating almost normally to the magnetic field.