High-j neutron excitations outside 136Xe
Abstract
The 0h9/2 and 0i13/2 strength at 137Xe, a single neutron outside the N=82 shell closure, has been determined using the 136Xe(α,3He)137Xe reaction carried out at 100 MeV. We confirm the recent observation of the second 13/2+ state and reassess previous data on the 9/2- states, obtaining spectroscopic factors. These new data provide additional constraints on predictions of the same single-neutron excitations at 133Sn.
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