Back to Search
Start Over
Emergence of the N=16 shell gap in 21O
- Source :
- Phys.Rev.C84:011301,2011; Publisher-note C84:029902,2011; Phys.Rev.C84:029902,2011
- Publication Year :
- 2010
-
Abstract
- The spectroscopy of 21O has been investigated using a radioactive 20O beam and the (d,p) reaction in inverse kinematics. The ground and first excited states have been determined to be Jpi=5/2+ and Jpi=1/2+ respectively. Two neutron unbound states were observed at excitation energies of 4.76 +- 0.10 and 6.16 +- 0.11. The spectroscopic factor deduced for the lower of these interpreted as a 3/2+ level, reveals a rather pure 0d3/2 single-particle configuration. The large energy difference between the 3/2+ and 1/2+ states is indicative of the emergence of the N=16 magic number. For the higher lying resonance, which has a character consistent with a spin-parity assignment of 3/2+ or 7/2-, a 71% branching ratio to the first 2+ state in 20O has been observed. The results are compared with new shell model calculations.<br />Comment: 5 pages, 2 figures
- Subjects :
- Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys.Rev.C84:011301,2011; Publisher-note C84:029902,2011; Phys.Rev.C84:029902,2011
- Publication Type :
- Report
- Accession number :
- edsarx.1012.4040
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.84.011301