g factors of coexisting isomeric states in Pb188

M. Ionescu-Bujor, A. Iordachescu, C. A. Ur, N. Marginean, G. Suliman, D. Bucurescu, F. Brandolini, F. Della Vedova, S. Chmel, S. M. Lenzi, R. Marginean, N. H. Medina, D. R. Napoli, P. Pavan, and R. V. Ribas
Phys. Rev. C 81, 024323 – Published 24 February 2010

Abstract

The g factors of the 12+, 11, and 8 isomeric states in Pb188 were measured using the time-differential perturbed angular distribution method as g(12+)=0.179(6), g(11)=+1.03(3), and g(8)=0.037(7). The g factor of the 12+ state follows the observed slight down-sloping evolution of the g factors of the i13/22 neutron spherical states with decreasing N. The g factors of the 11 and 8 isomers proposed as oblate and prolate deformed states, respectively, were interpreted within the rotational model, using calculated and empirical g factor values for the involved single-particle orbitals.

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  • Received 18 December 2009

DOI:https://doi.org/10.1103/PhysRevC.81.024323

©2010 American Physical Society

Authors & Affiliations

M. Ionescu-Bujor1, A. Iordachescu1, C. A. Ur2, N. Marginean1, G. Suliman1, D. Bucurescu1, F. Brandolini2, F. Della Vedova3, S. Chmel4, S. M. Lenzi2, R. Marginean1, N. H. Medina5, D. R. Napoli3, P. Pavan2, and R. V. Ribas5

  • 1National Institute for Physics and Nuclear Engineering, Bucharest, Romania
  • 2Dipartimento di Fisica dell’ Universitá and INFN, Sezione di Padova, Padova, Italy
  • 3Laboratori Nazionali di Legnaro, Legnaro, Italy
  • 4Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
  • 5Instituto de Fisica, Universidade de São Paulo, São Paulo, Brazil

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Vol. 81, Iss. 2 — February 2010

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