Decay of the X-mode into two upper-hybrid plasmons in the plasma filament. Experimental modeling and theoretical descriptionL.V. Simonchik, A.B. Altukhov, V.I. Arkhipenko, A.D. Gurchenko, E.Z. Gusakov, A.Y. Popov and M.S. UsachonakEPJ Web Conf., 149 (2017) 03013DOI: https://doi.org/10.1051/epjconf/201714903013