Angular correlations in the 27Al(p, α1γ)24Mg reaction at Ep = 7.4 MeV

Abstract

The results from measuring the ²⁷Al(p, α)²⁴Mg reaction’s differential cross sections at E_p = 7.4MeV with the formation of the final nucleus in the ground and first excited (2⁺, 1.369 MeV) states are presented. The differential cross sections are obtained in the 25°–160° (lab) range of α-particle emission angles. Double-differential cross sections for the ²⁷Al(p, α₁γ)²⁴Mg reaction are measured at the same proton energy for several α-particle angles in the forward hemisphere. All even components of the density matrix spin tensors of the ²⁴Mg nucleus in the 2⁺ (1.369 MeV) state are reconstructed and its orientation characteristics are determined. The experimental results are compared with calculations for the triton pickup mechanism using coupled channels, and in the the statistical limit of the compound nucleus model.