Elsevier

Nuclear Physics A

Volume 323, Issue 1, 2 July 1979, Pages 26-44
Nuclear Physics A

Structure studies of 23Na from the 20Ne(α, p)23Na reaction at Eα = 39.5 MeV

https://doi.org/10.1016/0375-9474(79)90414-7Get rights and content

Abstract

The nuclear structure of 23Na has been studied by means of the 20Ne(α, p) reaction at Eα = 39.5 MeV. Differential cross sections were measured over an angular range from ≈ 7° to ≈ 70° for ≈ 50 states. The angular distributions are compared with distorted-wave Born approximation (DWBA) calculations assuming a transfer of a “triton-like” cluster of nucleons with relative orbital angular momentum 0 and spin 12. The spectroscopic amplitudes for the Jπ = 12+132+ states are compared with the leading term of an SU(3) projection from wave functions recently calculated for 20Ne and 23Na by treating sd shell orbitals outside a closed 16O core. Satisfactory agreement is achieved for the lower-spin states at low excitation energies. For high-spin states at higher excitation energies the importance of configurations with particles outside the sd shell is apparent.

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