Transformation of High-Power Gyrotron Output Radiation Frequency under Conditions of Raman Scattering on Additional Electron BeamL.A. Yurovskiy, N. S. Ginzburg, A.M. Malkin, A.S. Sergeev and I.V. ZotovaEPJ Web Conf., 195 (2018) 01021DOI: https://doi.org/10.1051/epjconf/201819501021