Enhanced mixing of intrinsic states in deformed Hf nuclei

McCutchan E. A. , Casten R. F. , Werner V., Williams E., Winkler R., Wolf A., ...More

PHYSICAL REVIEW C, vol.77, no.5, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 77 Issue: 5
  • Publication Date: 2008
  • Doi Number: 10.1103/physrevc.77.054304
  • Title of Journal : PHYSICAL REVIEW C


Excited low-spin, nonyrast states in (170,172,174)Hf were populated in beta(+)/epsilon decay and studied through off-beam, gamma-ray spectroscopy. New coincidence data allowed for a substantial revision of the level schemes (170,174)Hf and a confirmation of the level scheme of (174)Hf. The Hf isotopes represent a unique situation in which a crossing of collective intrinsic excitations occurs, enhancing significantly the effects of mixing. Using branching ratios from excited 2(+) states, this mixing is followed and studied. The resulting mixing matrix elements are found to be similar to 30 keV-an order of magnitude larger than estimated previously for nearby nuclei. In the case of (170)Hf, the 2(beta)(+) and 2(gamma)(+) level are shown to be completely mixed.