Present status and future aspects of nuclear structure close to Sn-100 - The OSIRIS, NORDBALL-PEX and EUROBALL collaborations

Summary, in English

The present status of experimental approach to Sn-100 in the spectroscopy of excited states is landmarked by the T-z = 3/2 nuclei between (95)pd and In-101 and the T-z = 1 nuclei Pd-94 and Cd-98. The detection limits with Pre-EUROBALL gamma-arrays and ancillary detectors are below the 10(-5) level of the total fusion- evaporation residue cross section. A large scale shell model analysis of the existing data reveals the shell structure at Sn-100, which shows a remarkable similarity to Ni-56. Evidence for an increasing proton-neutron interaction in approaching the N = Z line is deduced from high spin isomers and spherical yrast lines. The effective E2 operator for protons and neutrons and implications for a low lying particle-hole (ph) E2 excitation in Sn-100 are discussed.

• Author: H Grawe; M Gorska; M Lipoglavsek; R Schubart; A Atac; A Axelsson; J Blomqvist; Joakim Cederkäll; G deAngelis; M dePoli; C Fahlander; A Johnson; KH Maier; LO Norlin; J Nyberg; D Foltescu; M Palacz; J Persson; M Rejmund; HA Roth; T Shizuma; O Skeppstedt; G Sletten; M Weiszflog
• Publishing year: 1997
• Language: English
• Pages: 185-190
• Publication/Series: Zeitschrift für Physik A Hadrons and Nuclei
• Volume: 358
• Issue: 2
• Links: http://dx.doi.org/10.1007/s002180050302
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0939-7922