TY CONF TI Elongation of propagation distance of high-intensity femtosecond post-filamentation channel KW filamentation KW high-voltage discharge KW post-filamentation channel JO XVII International conference on pulsed lasers and laser applications – AMPL-2025 AU Rizaev, G.E. AU Seleznev, L.V. AU Geync, Y.E. PY 2025 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences