Interaction of High-Power Terahertz Radiation with Metallic Films O.V. Chefonov, A.V. Ovchinnikov, S.I. Ashitkov, S.A. Evlashin, P.S. Kondratenko, M.B. Agranat and V.E. Fortov EPJ Web Conf., 195 (2018) 07001 Published online: 23 November 2018 DOI: 10.1051/epjconf/201819507001