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X(5) critical-point symmetries in 138Gd

Procter, M.G.; Cullen, D M; Ruotsalainen, P.; Braunroth, T.; Dewald, A; Fransen, C.; Grahn, T.; Greenlees, P T; Vitturi, A.; Hackstein, M.; Nieminen, Paivi; Reed, Matthew


The lifetimes of low-lying transitions in138Gd have been measured using the recoil-distance Doppler-shift technique. The resultant reduced transition probabilities have been compared to X(5) critical-point calculations to assess the potential 'phase-transitional' behaviour of138Gd. The X(5) symmetry describes the first order 'phase transition' between sphericity, U(5) and an axially deformed nuclear shape, SU(3). Although a high degree of correspondence is observed between the experimental and...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Conference paper
Source: Journal of Physics: Conference Series 381 (2012) 012060 - Rutherford Centennial Conference on Nuclear Physics, 8–12 August 2011, Manchester, UK
DOI: 10.1088/1742-6596/381/1/012062


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