Evolution and Destruction of Shapes in 59Cu

Summary, in English

An extensive high-spin level scheme has been established in ⁵⁹Cu using a heavy-ion fusion evaporation reaction and the GAMMASPHERE multidetector array in conjunction with MICROBALL. Next to the spherical states at low excitation energy a large number of regular sequences of high-energy γ-ray transitions have been observed, which form rotational bands with various degree of deformation. For the yrast superdeformed band about 90% of the intensity of the discrete γ decay-out, distributed over about 30 decay paths, is known, which allows for a detailed study of this decay-out process. Two of the deformed bands were found to decay by prompt proton emission into two different spherical states of ⁵⁸Ni, in direct competition with the γ decay-out process

• Author: Claes Fahlander; Corina Andreoiu; Dirk Rudolph; D.G. Sarantites; C.E. Svensson
• Department/s: Nuclear physics
• Publishing year: 2002
• Language: English
• Pages: 393-400
• Publication/Series: Challenges of Nuclear Structure. Proceedings of the 7th International Spring Seminar on Nuclear Physics
• Document type: Conference paper
• Publisher: World Scientific Publishing
• Topic: Subatomic Physics
• Keywords: discrete gamma decay; yrast superdeformed band; nuclear deformation; rotational bands; high energy gamma ray transitions; low excitation energy; spherical states; heavy-ion fusion evaporation reaction; high spin level scheme; ⁵⁹Cu; shell effect; nuclear spin; kinematic moments-of inertia; parity; level density; B2 band; ⁴⁰Ca(²⁸Si; B1 band; deformed band; prompt proton emission decay; ⁵⁸Ni; gamma decay-out process; shape destruction; shape evolution; X)⁵⁹Cu
• Conference name: Challenges of Nuclear Structure. Proceedings of the 7th International Spring Seminar on Nuclear Physics
• Conference date: 2001-05-27 - 2001-05-31
• Conference place: Maiori, Italy
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISBN: 981-02-4725-7