Triaxial superdeformed bands in [formula omitted]Lu and enhanced E1 decay-out strength

• Published in: Physics letters. B Vol. 454; no. 1; pp. 8 - 14
• Main Authors: Törmänen, S., Ødegård, S.W., Hagemann, G.B., Harsmann, A., Bergström, M., Bark, R.A., Herskind, B., Sletten, G., Tjøm, P.O., Görgen, A., Hübel, H., Aengenvoort, B., van Severen, U.J., Fahlander, C., Napoli, D., Lenzi, S., Petrache, C., Ur, C., Jensen, H.J., Ryde, H., Bengtsson, R., Bracco, A., Frattini, S., Chapman, R., Cullen, D.M., King, S.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.1999
• Subjects: Configuration assignments; Enhanced E1 decay out; Odd-odd nucleus; PES calculations; Triaxial superdeformation; 21.10.−k; Odd-odd nucleus; Configuration assignments; 23.20.Lv; Enhanced E1 decay out; Triaxial superdeformation; 25.70.−z; PES calculations; 27.70.+q
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(99)00346-9

In a search for exotic structures in odd-odd 164 Lu, performed as one of the first Euroball experiments eight new, presumably triaxial, superdeformed bands were found. For the first time, evidence is presented for superdeformation in an odd-odd Lu isotope for which theory predicts large triaxiality. The data are compared to expectations from calculations with the code “Ultimate Cranker”. Two of the bands are connected to normal-deformed structures and the E1 strength of the decay-out appears to be enhanced over single particle expectations, possibly due to octupole correlations.