Nuclear reactions in a supernova envelope

The spectrum parameters of particles accelerated in th framework of the model based on an assumption, that e process of Supernova flash are studied. Calculations are carried out in the/ hydrodynamic shock wave appearing during the Supernova flash passes through the substance of ejected shell. Particles accelerated on the shock wave front up to relativistic energies interact with atomic nuclei in a whole shell volume. Particle spectra of the F(E)dE=KEsup(-#betta#)dE type are used in calculations, where spectrum power #betta# changes from 2.5 up to 6 and spectrum cut-off energy Esub(c.-o) changes from 1 to 25 MeV. Irradiation with protons of (0.4-1.7)x1020 sm-2 intensity Csub(#betta#)=2.5-6 and Esub(c)=11-14 MeV leads to cosmic values of 6Li, 9Be, sup(10,11)B, and 11B/10B and 26Al/27Al ratios. Cosmic prevalences of light ele-- ments (6Li, 7Li, 9Be, 10B, 11B) and ratios of 7Li/6Li, 11B/10B, 26Al/27Al can be obtained only at irradiation with protons and α-particles with the ratio of α/p=(4.5-0.6)x10-3 and with the integral intensity of (0.4-1.5)x1020 protonsxsm-2; #betta#=2.5-6 and Esub(c)=10-14 MeV/nucleon. The results obtained testify on the coincidence of theoretical and experimental cosmic prevalences