Enhanced mixing of intrinsic states in deformed Hf nuclei

McCutchan, Yeşim; Casten, R.; Werner, V.; Williams, E.; Winkler, R.; Wolf, A.; Berant, Z.; Gurdal, G.; Qian, J.; Ai, H.; Amon, Lidya; Beausang, C.; Brenner, D.; Cakirli, Rabia; Casperson, R.; Fitzpatrick, C.; Frank, D.; Garnsworthy, A.; Heinz, A.; Luettke, R.; Mertz, A.; Oktem, Baki; Pietralla, N.; Regan, P.; Shoraka, B.; Terry, J.; Thompson, N.

doi:10.1103/physrevc.77.054304

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, no.5, 2008 (SCI-Expanded)

Publication Type: Article / Article
Publication Date: 2008
Doi Number: 10.1103/physrevc.77.054304
Journal Name: PHYSICAL REVIEW C
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
Istanbul University Affiliated: Yes

Abstract

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.