Spectroscopy of 46Ar by the (t, p) two-neutron transfer reaction

Phys. Rev. C

93
044335
(2016)
K. Nowak, K. Wimmer, S. Hellgartner, D. Mücher, V. Bildstein, J. Diriken, J. Elseviers, L. P. Gaffney, R. Gernhäuser, J. Iwanicki, J. G. Johansen, M. Huyse, J. Konki, T. Kröll, R. Krücken, R. Lutter, R. Orlandi, J. Pakarinen, R. Raabe, P. Reiter, T. Roger, G. Schrieder, M. Seidlitz, O. Sorlin, P. Van Duppen, N. Warr, H. De Witte, and M. Zielińska

States in the N = 28 nucleus 46Ar have been studied by a two-neutron transfer reaction at REX-ISOLDE
(CERN). A beam of radioactive 44Ar at an energy of 2.16 AMeV and a tritium-loaded titanium target were used
to populate 46Ar by the 3
H(44Ar, p) two-neutron transfer reaction. Protons emitted from the target were identified
in the T-REX silicon detector array. The excitation energies of states in 46Ar have been reconstructed from the
measured angles and energies of recoil protons. Angular distributions for three final states were measured and
based on the shape of the differential cross section an excited state at 3695 keV was identified as J π = 0+.
The angular differential cross section for the population of different states are compared to calculations using a
reaction model employing both sequential and direct transfer of two neutrons. Results are compared to shell-model
calculations using state-of-the-art effective interactions.

DOI
10.1103/PhysRevC.93.044335
Published on
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