APS » PROLA » Phys. Rev. C » Volume 70 » Issue 5
< Previous article | Next article >

Phys. Rev. C 70, 054319 (2004) [7 pages]

Nuclear structure in the vicinity of N=Z=28 56Ni

Download: PDF (132 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

K. L. Yurkewicz1,2, D. Bazin2, B. A. Brown1,2, C. M. Campbell1,2, J. A. Church1,2, D. C. Dinca1,2, A. Gade1,2, T. Glasmacher1,2, M. Honma3, T. Mizusaki4, W. F. Mueller2, H. Olliver1,2, T. Otsuka5,6, L. A. Riley7, and J. R. Terry1,2
1Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
2National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
3Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan
4Institute of Natural Sciences, Senshu University, Higashimita, Tama, Kawasaki, Kanagawa 214-8580, Japan
5Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Tokyo 113-0033, Japan
6RIKEN, Hirosawa, Wako-shi, Saitama 351-0198, Japan
7Department of Physics and Astronomy, Ursinus College, Collegeville, Pennsylvania 19426, USA

Received 13 March 2004; published 23 November 2004

The isotopes 54Ni , 56Ni , and 58Ni have been studied via intermediate-energy Coulomb excitation at the National Superconducting Cyclotron Laboratory. Absolute B(E2;01+→21+) excitation strengths have been determined for all three nuclei using a consistent experimental approach, and a measure of quadrupole collectivity has been established in the vicinity of the much discussed doubly magic shell closure at N=Z=28 . The energy of and excitation strength to the first 2+ state of 54Ni have been observed for the first time. The results are compared to large-scale shell-model calculations that predict that the E2 strength in 54Ni should be divided between the first and second 2+ states.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.70.054319
DOI: 10.1103/PhysRevC.70.054319
PACS: 25.70.De, 27.40.+z

[ Abstract  |  Previous article  |  Next article  |  Issue 5 ]