[en] This work shows the results of an experiment on the effect of high current electron and carbon ion pulsed beams Bi-Ca-Sr-Cu-O produced in vacuum (P ∼ 5*10^-5 torr). The parameters of the electron beam used in the experiment were: E ∼ 100-300 keV, j_e ∼ 10- 1000 A/cm², τ_p ∼ 300 ns. Experiments showed the threshold electron beam power density for surface melting in adiabatic heat conditions for Y-Ba-Cu- O ceramics up to P₀ ≥ 10⁷ W/cm. An increase in critical current by ∼ 2 times was observed in samples with a melting surface layer. The integral resistance of Y-Ba-Cu-O and Bi-Ca-Sr-Cu-O decreased by ∼ 2-2.5 times for electron beam irradiated samples and by 1.25- 1.8 times for ion irradiated samples. Amorphization did not take place and stoichiometry remained the same after such irradiation