Shape coexistence in the neutron-deficient lead region: A systematic study of lifetimes in the even-even Hg188-200 with the GRIFFIN spectrometer at TRIUMF

Creative Commons License

Olaizola B., Garnsworthy A. B., Ali F. A., Andreoiu C., Ball G. C., Bernier N., ...More

PHYSICAL REVIEW C, vol.100, no.2, 2019 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 100 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.1103/physrevc.100.024301
  • Journal Name: PHYSICAL REVIEW C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Eskisehir Osmangazi University Affiliated: No


Lifetimes of 2(1)(+) and 4(1)(+) states as well as some negative-parity and nonyrast states in Hg188-200 were measured using gamma-gamma electronic fast timing techniques with the LaBr3(Ce) detector array of the GRIFFIN spectrometer. The excited states were populated in the epsilon/beta(+) decay of J(pi) = 7(+)/2(-) 188-200Tl produced at the TRIUMF-ISAC facility. The deduced B(E2) values are compared to different interacting boson model predictions. The precision achieved in this paper over previous ones allows for a meaningful comparison with the different theoretical models of these transitional Hg isotopes, which confirms the onset of state mixing in Hg-190.