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Enhanced mixing of intrinsic states in deformed Hf nuclei

McCutchan, EA, Casten, RF, Werner, V, Williams, E, Winkler, R, Wolf, A, Berant, Z, Gurdal, G, Qian, J, Ai, H, Amon, L, Beausang, CW, Brenner, DS, Cakirli, RB, Casperson, RJ, Fitzpatrick, CR, Frank, D, Garnsworthy, AB, Heinz, A, Luettke, R, Mertz, AF, Oktem, Y, Pietralla, N, Regan, PH, Shoraka, B, Terry, JR and Thompson, NJ (2008) Enhanced mixing of intrinsic states in deformed Hf nuclei PHYSICAL REVIEW C, 77 (5). ? - ?. ISSN 0556-2813


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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.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Nuclear, Physics, TUNGSTEN NUCLEI, DECAY, TA-174, BETA, HF-174
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Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:07
Last Modified: 23 Sep 2013 18:26

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