The study of angular correlations in the $^{12}$С$(\alpha,p\gamma)^{15}$N reaction at $E_\alpha=30.3$ MeV

The results of the measurement of angular $p$-$\gamma$-correlations and analysis of the mechanism of the $^{12}$C$(\alpha,p\gamma)^{15}$N reaction are presented. Even components of the spin tensor of the density matrix for the state $3/2^-$ (6.32 MeV) of a 15N nucleus for proton exit angles from 30 to 160° are recovered. It is shown that the mechanism of stage-by-stage transfer of a heavy cluster with account of a delay in the interaction is important for the description of the reaction correlation characteristics.