The rotational gamma-continuum in the mass region A approximate to 110

Citation
A. Bracco et al., The rotational gamma-continuum in the mass region A approximate to 110, NUCL PHYS A, 673(1-4), 2000, pp. 64-84
Citations number
23
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
673
Issue
1-4
Year of publication
2000
Pages
64 - 84
Database
ISI
SICI code
0375-9474(20000619)673:1-4<64:TRGITM>2.0.ZU;2-P
Abstract
Unresolved gamma transitions of Te-114 and of Sn-112 sorted into one-dimens ional and two-dimensional spectra have been studied. The reaction Ni-64 + C r-54 at bombarding energies 230, 240, 250, 260, 270 MeV was used and the ga mma-rays were detected with the EUROBALL array. In the case of the nucleus 114Te the values of the multiplicity as a function of bombarding energy and of the moment of inertia were obtained. The effective moment of inertia wa s found to be almost constant in the interval I = 20-40 h, in contrast to t he decreasing behaviour of the dynamic moment of inertia for the terminatin g yrast band. The ridge valley structures in E-gamma 1 x E-gamma 2 spectra of Te-114 and of Sn-112 were analysed with the fluctuation analysis techniq ue. The analysis of the two nuclei are compared to simulations based on mic roscopic cranking calculations with residual interactions included. A rathe r good agreement is found between data and predictions. (C) 2000 Elsevier S cience B.V. All rights reserved.