Phys. Rev. C
69,
034330
(2004)
[13 pages]
High-angular-momentum structures in 64Zn
D. Karlgren et al.
Show All Authors/Affiliations
Hide All Authors/Affiliations
D. Karlgren1,2, R. M. Clark1, I. Ragnarsson1,3, C. E. Svensson1,*, D. Ward1, R. Wyss2, C. Andreoiu4,†, R. A. E. Austin5, M. P. Carpenter6, M. Cromaz1, M. A. Deleplanque1, R. M. Diamond1, P. Fallon1, A. Görgen1,‡, R. V. F. Janssens6, T. L. Khoo6, F. Kondev6,§, G. J. Lane1,**, T. Lauritsen6, I. Y. Lee1, A. O. Macchiavelli1, T. Rodinger5, D. Rudolph4, D. G. Sarantites7, D. Seweryniak6, T. Steinhardt8, F. S. Stephens1, O. Thelen8, K. Vetter1,††, and J. C. Waddington5
1Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 2KTH, Royal Institute of Technology, Frescativägen 24, S-10405 Stockholm, Sweden 3Division of Mathematical Physics, Lund Institute of Technology, S-22100 Lund, Sweden 4Department of Physics, Lund University, S-22100 Lund, Sweden 5Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1 6Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA 7Chemistry Department, Washington University, St. Louis, Missouri 63130, USA 8Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
Received 6 June 2003; published 25 March 2004
High-angular-momentum states in 64Zn were populated in the 40Ca(28Si,4p) reaction at a beam energy of 122 MeV. Evaporated, light, charged particles were identified by the Microball, while γ rays were detected using the Gammasphere array. The main focus of this paper is on two strongly coupled, collective bands. The yrast band, which was previously known, has been linked to lower-lying states establishing the excitation energies and angular momenta of in-band states for the first time. The newly identified excited band decays to the yrast band but firm angular-momentum assignments could not be made. In order to interpret these structures cranked-Nilsson-Strutinsky calculations have been performed. The calculations have been extended to account for the distribution of nucleons within a configuration. The yrast collective band is interpreted as based on the π(f7∕2)−1(p3∕2f5∕2)2(g9∕2)1ν(p3∕2f5∕2)4(g9∕2)2 configuration. There are several possible interpretations of the second band but it is difficult to distinguish between the different possibilities.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.034330
DOI:
10.1103/PhysRevC.69.034330
PACS:
21.10.Re, 23.20.Lv, 27.50.+e
*Present address: Department of Physics, University of Guelph, Guelph, Ontario, Canada NIG 2W1. †Present address: Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom. ‡Present address: DAPNIA∕SPhN, CEA Saclay, F–91191 Gif–sur–Yvette, France. §Present address: Technology Development Division, Argonne National Laboratory, Argonne, IL 60439. **Present address: Department of Nuclear Physics, The Australian National University, Canberra ACT 0200, Australia. ††Present address: Glenn T. Seaborg Institute, Lawrence Livermore National Laboratory, Livermore, CA 94550.
|
|