Structure of states in the mass-90 region by (p, p′γ) angular correlation at the lowest 5 2⁺ analogue resonances

Angular correlations between inelastically scattered protons leading to the 2⁺ and in some cases the 4⁺ states of doubly even nuclei in the mass-90 region, and subsequent 2⁺ → 0⁺ γ-rays were measured. Analogue resonances corresponding to the lowest 5 2⁺ states of odd nuclei were observed. The data were analysed using a method which takes into account compound nuclear enhancement. Relative decay partial amplitudes of the analogue resonances were deduced.