The 20Ne(α, γ)24Mg reaction

Abstract

The reaction 20Ne(α, γ) 24Mg has been investigated in the energy range Eα = 1.2 to 3.2 MeV. Twelve resonances were observed. Gamma-ray angular distribution and correlation measurements yield a unique spin and parity assignment for ten 24Mg levels with excitation energies in the region Ex = 10.6−12.0 MeV.

The resonance strengths and deduced radiative widths are reported. A strong preference is found for deexcitation through E2 radiation; E1 and M1 transitions are relatively weak, as expected from isospin selection rules.