THE ALIGNMENT OF THE 16О(3–) NUCLEUS FORMED IN REACTIONS WITH ALPHA PARTICLES

The angular dependence of the alignment of the 16О(3–, 6.13 MeV) nucleus formed in the reactions 16О(α, α) 16О(3–) and 15N(α, 𝑡)16О(3–) at α-particle energies of 30.3 MeV was calculated taking into account the reactions’ mechanisms that determine the cross section for the formation of the 16О(3–) nucleus and is compared with the experimental values of the alignments reconstructed from the measured functions of angular 𝑦γ-correlations. It has been established that the formation mechanisms of the 16О(3–) nucleus significantly affect its orientation characteristics. The maximum amplitude alignment of the 16О(3–) nucleus in both reactions is observed in the region of final particle emission angles in which direct mechanisms make the main contribution. At these angles, the calculated alignments are in satisfactory agreement with the experimental ones.