Influence of electron irradiation on current distribution process in granulated high-temperature superconducting real wires and tapes

It is known, that electron irradiation by small dozes of granulated samples BiSrCaCuO, do not result in appreciable changes of superconducting properties directly of grain as a result of radiation damages, changes the condition of intergranulated contact in studied samples. It is shown, that if at thermomechanical stresses the resistance of intergranular contact grows, fast electron irradiation causes as increasing and reduction of this resistance.