A study of the two-particle states in 42Sc from the 41Ca(3He, d) reaction

Abstract Energy levels in 42 Sc have been studied in the proton stripping reaction 41 Ca( 3 He, d) 42 Sc at a bombarding energy of 20 MeV with an energy resolution of about 10 keV. A total of 90 levels were identified below 6 MeV excitation energy. Differential cross sections were measured as a function of reaction anngle, and l -values and spectroscopic strengths were deduced from a DWBA analysis. T = 1 states with f 7 2 2 and f 7 2 p 3 2 configurations were identified from a comparison of the spectroscopic results from the present 41 Ca( 3 He, d) experiment and previous 41 Ca(d, p) studies. The individual spectroscopic strengths for the two members of the 0.62 MeV 1 + + 7 + unresolved doublet were determined by a measurement of the deexcitation γ-rays in prompt coincidence with the relevant reaction deuteron group. he results are discussed in terms of sum rules, and effective two-body interaction matrix elements are derived. The spectroscopic strengths for the low-lying transitions agree with the predictions from the coexistence model.