Collective Excitations in the Vicinity of N=Z

Summary, in English

In our contribution to the INPC98 conference we reported on the experimental investigation of high spin collective states in medium and heavy mass N≈Z nuclei at LNL. The main purpose is to set light on the role of the proton-neutron interaction in the collective behavior of the nucleus. In medium mass N=Z nuclei, in contrast with the stable nuclei, valence protons and neutrons occupy the same orbitals and one may expect a reinforcement of neutron-proton T=0 (np) pairing correlations[1]. In this interesting subject, the medium mass N=Z=36 ⁷²Kr has been studied and completely reported in [2]. In this proceedings we will concentrate in unpublished results concerning the onset of collectivity on nearly spherical nuclei in the ¹⁰⁰Sn region. In nuclei with Z=50 and Z=49 dipole bands have been found indicating the presence of "Magnetic Rotation" [3].

• Author: G. De Angelis; N. Belcari; D. De Acuña; D. R. Napoli; T. Martinez; M. De Poli; P. Spolaore; G. Prete; E. Fioretto; P. Bednarczyk; A. Gadea; E. Farnea; C. A. Ur; D. Bazzacco; S. M. Lenzi; S. Lunardi; P. Pavan; C. Rossi Alvarez; F. Soramel; P. G. Bizzeti; A. M. Bizzeti-Sona; H. Grawe; R. Schubart; R. Wyss; F. Xu; A Johnson; N. Blasi; G. Lo Bianco; J. Nyberg; J. Persson; C. Fahlander; D. Rudolph; S. Frauendorf
• Department/s: Nuclear physics
• Publishing year: 1999-07-26
• Language: English
• Pages: 659-662
• Publication/Series: Nuclear Physics A
• Volume: 654
• Links: http://dx.doi.org/10.1016/S0375-9474(00)88521-8
• Document type: Conference paper
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0375-9474