58Ni: An Unpaired Band Crossing at New Heights of Angular Momentum for Rotating Nuclei

Summary, in English

High-spin states in Ni-58 have been investigated by means of the fusion-evaporation reaction Si-28(S-32,2p)Ni-58 at 130 MeV beam energy. Discrete-energy levels are observed in Ni-58 at record-breaking 42 MeV excitation energy and angular momenta in excess of 30h. The states form regular rotational bands with unprecedented high rotational frequencies. A comparison with configuration dependent cranked Nilsson-Strutinsky calculations reveals an exceptional two-band crossing scenario, the interaction strength of which is strongly shape dependent.

• Author: Dirk Rudolph; Gillis Carlsson; Ingemar Ragnarsson; Sven Åberg; Corina Andreoiu; MA Bentley; MP Carpenter; RJ Charity; RM Clark; M Cromaz; J Ekman; Claes Fahlander; P Fallon; E Ideguchi; AO Macchiavelli; MN Mineva; W Reviol; DG Sarantites; D Seweryniak; SJ Williams
• Department/s: Nuclear physics; Mathematical Physics
• Publishing year: 2006
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 96
• Issue: 9
• Links: http://dx.doi.org/10.1103/PhysRevLett.96.092501
• Document type: Journal article (letter)
• Publisher: American Physical Society
• Topic: Physical Sciences; Subatomic Physics
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISSN: 1079-7114