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Phys. Rev. C 54, 626–637 (1996)

High-spin states and signature inversion in 78Br

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E. Landulfo, D. F. Winchell, J. X. Saladin, F. Cristancho, D. E. Archer, J. Döring, G. D. Johns, M. A. Riley, S. L. Tabor, V. A. Wood, S. Salém-Vasconcelos, and O. Dietzsch
Department of Physics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
Instituto de Física, Universidade de São Paulo, 05508 São Paulo, Brazil
Department of Physics, Florida State University, Tallahassee, Florida 32306
Instituto de Pesquisas Energéticas e Nucleares-IPEN/CNEN SP, CP 11049-CEP 05422-970 São Paulo, Brazil

Received 21 March 1996; published in the issue dated August 1996

High-spin states in 78Br have been studied up to an excitation energy of approximately 6 MeV and a spin of 17ħ using the 70Zn(11B,3n)78Br reaction at a beam energy of 45 MeV. The properties of the observed rotational bands, including moments of inertia, signature splitting, and signature inversion, are discussed within the context of the cranked shell model. It is shown that cranked-shell-model calculations are able to reproduce the experimentally observed signature inversion in the positive-parity yrast bands in the odd-odd isotopes 74,76,78Br, which permits the assignments of quasiparticle configurations to these bands. © 1996 The American Physical Society.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.54.626
DOI:
10.1103/PhysRevC.54.626
PACS:
21.10.Re, 21.60.Jz, 23.20.Lv, 27.50.+e