Enhanced mixing of intrinsic states in deformed Hf nuclei

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

PHYSICAL REVIEW C, sa.5, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1103/physrevc.77.054304
  • Dergi Adı: PHYSICAL REVIEW C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • İstanbul Üniversitesi Adresli: Evet

Özet

Excited low-spin, nonyrast states in Hf-170,Hf-172,Hf-174 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 Hf-170,Hf-174 and a confirmation of the level scheme of Hf-174. 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 Hf-170, the 2(beta)(+) and 2(gamma)(+) level are shown to be completely mixed.