Classification of Superdeformed Bands in the Mass A~60 Region

Summary, in English

The experimental knowledge of the Cu-61(29)32 and Zn-61(30)31 nuclei has been largely extended via the joint results from three experiments. The fusion-evaporation reaction used a Ar-36 beam and a Si-28 target foil to produce the two nuclei via the evaporation of either three protons (Cu-61) or two protons and a neutron (Zn-61). 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 similar to 60 region.

• Författare: Lise-Lotte Andersson; Dirk Rudolph; Gillis Carlsson; Claes Fahlander; Emma Johansson; Ingemar Ragnarsson; D Torres
• Avdelning/ar: Kärnfysik; Matematisk fysik
• Publiceringsår: 2008
• Språk: Engelska
• Sidor: 211-214
• Publikation/Tidskrift/Serie: Nuclear Physics and Astrophysics
• Volym: 1072
• Länkar: http://dx.doi.org/10.1063/1.3039830
• Dokumenttyp: Konferensbidrag
• Förlag: American Institute of Physics (AIP)
• Ämne: Subatomic Physics; Physical Sciences
• Nyckelord: cranked Nilsson-Strutinsky; Superdeformation; calculations; high-spin states
• Conference name: Conference on Nuclear Physic and Astrophysics - From Stable Beams to Exotic Nuclei
• Conference date: 2008-06-25 - 2008-06-30
• Status: Published
• Projekt: A Trilogy of Mass A=61: Superdeformed Structures, Exotic Decay, and Isospin Symmetry
• Forskningsgrupp: Nuclear Structure
• ISBN/ISSN/Övrigt: ISBN: 978-0-7354-0603-2