Abstract
Excited states in Xe137 have been studied by using the near-barrier single-neutron transfer reactions C13(Xe136,C12γ)Xe137 and Be9(Xe136,Be8γ)Xe137 in inverse kinematics. Particle-γ and particle-γγ coincidence measurements have been performed with the Phoswich Wall and Digital Gammasphere detector arrays. Evidence is found for a 13/22+ level (E=3137keV) and for additional high-lying 3/2- and 5/2- states. The results are discussed in the framework of realistic shell-model calculations. These calculations are also extended to the 13/21+ and 13/22+ levels in the N=83 isotonic chain. They indicate that there is a need for a value of the neutron 0i13/2 single-particle energy (ESPE=2366keV) lower than the one proposed in the literature. It is also demonstrated that the population patterns of the j=±1/2 single-particle states in Xe137 are different for the two targets used in these measurements and the implications of this effect are addressed.
| Original language | English |
|---|---|
| Article number | 034309 |
| Journal | Physical Review C |
| Volume | 94 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 8 2016 |
Funding
The authors thank J. T. Anderson and M. B. Oberling (ANL) for technical support and J. P. Greene (ANL) for the preparation of the targets. This work was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Grant No. DE-SC0014442 and Contracts No. DE-AC02-06CH11357 and No. DE-AC05-00OR22725. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility. E.P.-R. acknowledges financial support of DGAPA-UNAM under the PASPA Program.