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Phys. Rev. C 72, 024305 (2005) [9 pages]

Identification of shell-model states in 135Sb populated via β- decay of 135Sn

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J. Shergur1,2, A. Wöhr1,3, W. B. Walters1, K. -L. Kratz4, O. Arndt4, B. A. Brown5, J. Cederkall6, I. Dillmann4, L. M. Fraile6,7, P. Hoff8, A. Joinet6, U. Köster6, and B. Pfeiffer4
1Department of Chemistry, University of Maryland, College Park, Maryland 20742-2021, USA
2Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
3Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
4Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
5Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
6ISOLDE, PH Department, CERN, CH-1211 Genève 23, Switzerland
7Departamento de Física Atómica Molecular y Nuclear, Universidad Complutense, E-28030 Madrid, Spain
8Department of Chemistry, University of Oslo, NO-1163 Oslo, Norway

Received 14 March 2005; published 12 August 2005

The β decay of 135Sn was studied at CERN/ISOLDE using a resonance ionization laser ion source and mass separator to achieve elemental and mass selectivity, respectively. γ-ray singles and γ-γ coincidence spectra were collected as a function of time with the laser on and with the laser off. These data were used to establish the positions of new levels in 135Sb, including new low-spin states at 440 and 798 keV, which are given tentative spin and parity assignments of 3/2+ and 9/2+, respectively. The observed levels of 135Sb are compared with shell-model calculations using different single-particle energies and different interactions.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.72.024305
DOI:
10.1103/PhysRevC.72.024305
PACS:
23.40.-s, 23.20.-g, 27.60.+j, 21.60.Cs
 
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