We have performed the ${}^{70}\mathrm{Zn}(d,{}^3\mathrm{He}){}^{69}\mathrm{Cu}$ proton pick-up reaction in direct kinematics using a deuteron beam at 27 MeV. The outgoing ${}^3\mathrm{He}$ particles were detected at the focal-plane detection system of an Enge split-pole spectrometer. The excitation-energy spectrum was reconstructed up to 7 MeV and spectroscopic factors were obtained after analysis of the angular distributions in the finite-range distorted-wave Born approximation. The results show three new angular distributions for which the $\pi f_{7/2}$ strength was measured and a lower limit of the centroid is established. State-of-the-art shell-model calculations are performed and predict a $\pi f_{7/2}$ strength that lies too high in energy in comparison to our experimental results.

• Received 7 March 2016

DOI:https://doi.org/10.1103/PhysRevC.93.064308