[en] A event selecting circuit fixing in the binary code an arbitrary number of coincidences of 32 input signals with the gating pulse is described. The width of input signals is ≥ 15 ns. 5 refs.; 3 figs

[en] The cross sections of hadron production on ²³⁵U nuclei in the energy range 0.3-3.5 GeV obtained measuring the uranium photofission by tagged photons is presented. A multilayer low-pressure proportional chamber has been used to detect the fission products. In the photon energy range up to 500 MeV the obtained cross sections indicate the necessity for new measurements and in the energy range higher than 1 GeV confirm the existence of shadowing in the total cross section of hadron photoproduction. The mean shadowing parameter in the photon energy range 2-3.5 GeV is obtained to be 0.974±0.005. 17 refs.; 5 figs.; 1 tab

[en] Based on the linear electron accelerator LUE-75 of the A.I. Alikhanyan National Scientific Laboratory a technique for obtaining controlled primary electron beams with an intensity of (10–20) electrons per second in the energy range (15–75) MeV for elementary particle detectors calibration was developed and applied. Joint work with the V.P. Dzhelepov Laboratory of Nuclear Problems (JINR, Dubna, RF) showed the efficiency of the technique