Gamma Decay of Analog Resonances in theTi48(p, γ)V49Reaction

The $\gamma$ decay of four prominent resonances in the ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ti}(p, \gamma ){}_{}{}^{49}{}_{}{}^{}\mathrm{V}$ reaction have been studied using an 18-cc Ge(Li) detector. $\gamma$-ray angular distributions were obtained at resonant energies of 1.007, 1.013, 1.361, and 1.387 MeV. From these data, relative intensities, mixing ratios, and probable spins for resonant and secondary states are determined. The decay of the resonances indicate that the M1 $\gamma$ decay of the analog resonances is strongly inhibited. It is found that the prominent resonance at 1.387 MeV is probably not an analog resonance, indicating that the identification of resonances as analog resonances simply on the basis of their strength in the ($p, \gamma$) reaction is highly questionable.