ANGULAR CORRELATION α-PARTICLES IN THE REACTION 12C(γ, 3α) AT THE FORMATION OF 8Be NUCLEUS IN THE FIRST EXCITED STATE

Investigation of channel formation of the first excited state of Be-8 nucleus in C-12(gamma, 3 alpha) reactions is executed. The methodic of kinematical models of gamma + C-12 -> alpha(1) + Be-8* reaction is developed and is correctly selected alpha(1)-particle. The angular distributions of gamma + C-12 -> alpha(1) + Be-8* reaction and channel of disintegration of nucleus Be-8* -> alpha(2) + alpha(3) are measured. The elements of density matrix of Be-8* nucleus and spherical spin-tensors characterizing polarization of Be-8* nucleus definite.