Alpha capture to the giant dipole resonance

Abstract
Cross sections for alpha capture to the giant dipole resonances of 1d2s and 1f2p shell nuclei are shown to be in agreement with Hauser-Feshbach calculations. Isospin mixing in 28Si, 32S and 40Ca is discussed. It is shown that alpha capture data do not provide a conclusive test for the proposed isosplitting of the 60Ni and 42Ca giant dipole resonances.