Lifetimes of intruder states in 186Pb, 188Pb and 194Po
LE COZ, Y.
Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée [DAPNIA]
Département de Physique Nucléaire (ex SPhN) [DPHN]
< Réduire
Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée [DAPNIA]
Département de Physique Nucléaire (ex SPhN) [DPHN]
Langue
en
Article de revue
Ce document a été publié dans
Nuclear Physics A. 2008, vol. 801, p. 83-100
Elsevier
Résumé en anglais
Lifetimes of prolate intruder states in 186Pb and 188Pb and oblate intruder states in 194Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of |β2| = 0.29(5) and ...Lire la suite >
Lifetimes of prolate intruder states in 186Pb and 188Pb and oblate intruder states in 194Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of |β2| = 0.29(5) and |β2| = 0.17(3) have been extracted from experimental B(E2) values for the prolate and the oblate bands, respectively. The present study addresses the phenomenon of shape coexistence typical for the nuclei near Z = 82 and N = 104, providing information on configuration mixing of intrinsic structures of the nuclei of interest. The results are compared with the available lifetime data and theoretical results for neutron-deficient Po, Pb, Hg and Pt nuclei. Furthermore, new self-consistent mean-field calculations have been carried out for 194Po.< Réduire
Origine
Importé de halUnités de recherche