ELECTROLUMINESCENT GAS DETECTOR Russian patent published in 1997 - IPC

FIELD: recording ionizing radiation. SUBSTANCE: detector has its focusing electrode placed in absorption zone and made in the form of hollow cylinder with height h_f and inner diameter d_f exceeding diameter d_in of input window of material having low atomic number. Second grid electrode forming electroluminescence zone together with first grid electrode installed in center of detector interior is arranged on inner surface of output window having diameter d_out and rigidly fixed with this surface; distance Rx from detector axis to inner surface of case in each sectional area at distance Hx from input window specified by expression H_f≅ H_x≅ H_∂,, where H_∂ is detector height, and H_f = h_f + Δ, where Δ is gap between focusing electrode and input window, is found from condition and monotonously goes down with Hx which dictates conical shape of this part of case. EFFECT: improved performance characteristics and operating conditions of detector. 1 dwg