The isospin dependent p-n multiplets in the region of doubly magic Sn-100

Summary, in English

Experimental data on p-n multiplets appearing in the nuclei near double-magic Sn-100 accesible in heavy-ion fusion-evaporation experiments have been analyzed. Proton-rich nuclei in this region have been investigated using the NORDBALL array. A Ni-58 beams at energies of 270 Mev on Fe-54 and 261 MeV on Cr-50 targets were used. Reaction channel separation was achieved with a 4 pi charged particle multi-detector set-up together with a 1 pi neutron detector wall placed in the forward direction. On the basis of gamma gamma-coincidence and angular correlation relations a level schemes of several light Sn, In, Sb, Te and I nuclei were observed for the first time in the present experiment. The observed structure of nuclei are discussed in the framework of the nuclear shell-model. The p-n multiplets in the A similar to 100 region corresponding to the nucleon pairs with mixed configurations has been considered as a playground for the tests of the T = 0 and T = 1 parts of the effective interaction.

• Author: J Kownacki; A Atac; Joakim Cederkäll; B Cederwall; C Fahlander; H Grawe; E Ideguchi; A Johnson; R Julin; S Juutinen; M Karny; A Kerek; W Klamra; A Likar; M Lipoglavsek; LO Norlin; J Nyberg; S Mitarai; H Makela; M Palacz; J Persson; M Piiparinen; D Seweryniak; R Schubart; G Sletten; S Tormanen; A Virtanen; R Wyss
• Publishing year: 1996
• Language: English
• Pages: 87-97
• Publication/Series: Acta Physica Polonica. Series B: Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory
• Volume: 27
• Issue: 1-2
• Document type: Journal article
• Publisher: Jagellonian University, Cracow, Poland
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0587-4254