Cr52(p, α)V49reaction

The ${}_{}{}^{52}{}_{}{}^{}\mathrm{Cr}(p, \alpha ){}_{}{}^{49}{}_{}{}^{}\mathrm{V}$ reaction has been studied at a bombarding energy of 35 MeV. The qualitative features of the spectra are discussed. These include the population of proton hole states, analog states, and high spin states. The spectra are compared with other pick-up reaction data and the comparison is shown to be a useful tool for identifying positive parity states in this region. Some states which are observed in ${}_{}{}^{51}{}_{}{}^{}\mathrm{V}(p, t){}_{}{}^{49}{}_{}{}^{}\mathrm{V}$ data are not observed in the ($p, \alpha$) spectra. Distorted-wave calculations using mass three cluster form factors are described and shown to reproduce the experimental angular distributiions of the previously known levels. Similar calculations using microscopic form factors also reproduce the shapes of the angular distributions reasonably well. Relative spectroscopic factors for the proton hole states deduced from the microscopic calculations are shown to be in good agreement with zero order shell model predictions. The general trends of the experimental cross sections for the negative parity microscopic states are shown to be reproduced by microscopic calculations assuming $0{f_{\frac{7}{2}}}^3$ pickup.