Physics Letters B (Dec 2015)

Evolution of single-particle strength in neutron-rich 71Cu

  • P. Morfouace,
  • S. Franchoo,
  • K. Sieja,
  • I. Matea,
  • L. Nalpas,
  • M. Niikura,
  • A.M. Sánchez-Benítez,
  • I. Stefan,
  • M. Assié,
  • F. Azaiez,
  • D. Beaumel,
  • S. Boissinot,
  • C. Borcea,
  • R. Borcea,
  • G. Burgunder,
  • L. Cáceres,
  • N. De Séréville,
  • Zs. Dombrádi,
  • J. Elseviers,
  • B. Fernández-Domínguez,
  • A. Gillibert,
  • S. Giron,
  • S. Grévy,
  • F. Hammache,
  • O. Kamalou,
  • V. Lapoux,
  • L. Lefebvre,
  • A. Lepailleur,
  • C. Louchart,
  • G. Marquinez-Duran,
  • I. Martel,
  • A. Matta,
  • D. Mengoni,
  • D.R. Napoli,
  • F. Recchia,
  • J.-A. Scarpaci,
  • D. Sohler,
  • O. Sorlin,
  • M. Stanoiu,
  • C. Stodel,
  • J.-C. Thomas,
  • Zs. Vajta

DOI
https://doi.org/10.1016/j.physletb.2015.10.064
Journal volume & issue
Vol. 751, no. C
pp. 306 – 310

Abstract

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The strength functions of the πf5/2, πp3/2 and πf7/2 orbitals in neutron-rich 71Cu were obtained in a 72Zn(d,3He)71Cu proton pick-up reaction in inverse kinematics using a radioactive beam of 72Zn at 38 MeV/u. A dedicated set-up was developed to overcome the experimental challenges posed by the low cross section of the reaction and the low energy of the outgoing 3He particles. The excitation-energy spectrum was reconstructed and spectroscopic factors were obtained after analysis of the angular distributions with the finite-range Distorted-Wave Born Approximation (DWBA). The results show that unlike for the πf5/2 orbital and contrary to earlier interpretation, the πf7/2 single-particle strength distribution is not appreciably affected by the addition of neutrons beyond N=40.