First observations of ion cyclotron emisison in the spherical tokamak Globus-M2

In the Globus-M2 tokamak, using magnetic probes, emission was detected in the ion-cyclotron frequency range (the frequency of the first harmonic is in the range from 4 to 12 MHz) in discharges with injection of a beam of high-energy atoms. The observed spectra are a set of equidistant harmonics at ion cyclotron resonance frequencies for hydrogen or deuterium ions; splitting of spectral lines is also observed. Under the assumption that the detected radiation is ion-cyclotron, its localization was established. Using a three-coordinate probe, the polarization of the radiation was determined.