The γ-ray decay properties of analogue states in ⁵²Cr via the reaction ⁵¹V(p, γ)⁵²Cr

Abstract

The γ-ray spectra emitted following proton capture by ⁵¹V were measured as a function of incident proton energy. The γ-ray decay of the states was observed and angular distributions were measured. The measured branching ratios and excitation energies suggest these states in ⁵²Cr are analogues of low-lying states in ⁵²V. Assuming these states to be analogues, the measured mixing ratios, branching ratios and normalized decay rates are compared with shell model calculations. Qualitative agreement with the mixing and branching ratios is obtained but the inclusion of $\text{2}\text{p}{}_{\mathrm{<mtext>1</mtext><mtext>2</mtext>}}\text{and}\text{1}\text{f}{}_{\mathrm{<mtext>5</mtext><mtext>2</mtext>}}$ neutron excitations appears essential if the decay rates are to be described.