2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/86416First observation of generation in the backward wave oscillator with a "grid" diffraction grating and lasing of the volume FEL with a "grid" volume resonator that is formed by a perodic set of metallic threads inside a rectangular waveguide is considered.3 pages, 3 figuresPlasma PhysicsGeneral PhysicsFirst observation of generation in the backward wave oscillator with a "grid" diffraction grating and lasing of the volume FEL with a "grid" volume resonatortext