Classification of Superdeformed Bands in the Mass A∼60 Region

Andersson, L.-L.; Rudolph, D.; Carlsson, B. G.; Fahlander, C.; Johansson, E. K.; Ragnarsson, I.; Torres, D. A.
November 2008
AIP Conference Proceedings;11/11/2008, Vol. 1072 Issue 1, p211
Academic Journal
The experimental knowledge of the 2961Cu32 and 3061Zn31 nuclei has been largely extended via the joint results from three experiments. The fusion-evaporation reaction used a 36Ar beam and a 28Si target foil to produce the two nuclei via the evaporation of either three protons (61Cu) or two protons and a neutron (61Zn). The experimental set-ups comprised the Ge-array GAMMASPHERE as well as neutron and charged-particle detectors placed around the target position. The resulting level schemes include around ten rotational superdeformed structures in each isotope. Most of them are linked to normally deformed states and in many cases spins and parities of the low-lying states in each structure have been determined. The collective structures are compared with results from configuration dependent Cranked Nilsson-Strutinsky calculations. The different structures are in general well understood from the calculation but the results do also suggest modifications of the standard Nilsson parameters in the mass A∼60 region.


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