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Single-particle strength in neutron-rich Cu69 from the Zn70(d,He3)Cu69 proton pick-up reaction

P. Morfouace, S. Franchoo, K. Sieja, I. Stefan, N. de Séréville, F. Hammache, M. Assié, F. Azaiez, C. Borcea, R. Borcea, L. Grassi, J. Guillot, B. Le Crom, L. Lefebvre, I. Matea, D. Mengoni, D. Napoli, C. Petrone, M. Stanoiu, D. Suzuki, and D. Testov

We have performed the Zn70(d,He3)Cu69 proton pick-up reaction in direct kinematics using a deuteron beam at 27 MeV. The outgoing He3 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 πf7/2 strength was measured and a lower limit of the centroid is established. State-of-the-art shell-model calculations are performed and predict a πf7/2 strength that lies too high in energy in comparison to our experimental results.

Voir en ligne : Phys. Rev. C 93, 064308 (2016)


 

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Institut de Physique Nucléaire Orsay - 15 rue Georges CLEMENCEAU - 91406 ORSAY (FRANCE)
UMR 8608 - CNRS/IN2P3

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