The rotational γ-continuum in the mass region A≈110

✍ Scribed by A. Bracco; S. Frattini; S. Leoni; F. Camera; B. Million; N. Blasi; G. Falconi; G. Lo Bianco; M. Pignanelli; E. Vigezzi; B. Herskind; M. Bergström; P. Varmette; S. Törmänen; A. Maj; M. Kmiecik; D.R. Napoli; M. Matsuo

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 295 KB
• Volume: 673
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00149-4

✦ Synopsis

Unresolved γ transitions of 114 Te and of 112 Sn sorted into one-dimensional and two-dimensional spectra have been studied. The reaction 64 Ni + 54 Cr at bombarding energies 230, 240, 250, 260, 270 MeV was used and the γ -rays were detected with the EUROBALL array. In the case of the nucleus 114 Te the values of the multiplicity as a function of bombarding energy and of the moment of inertia were obtained. The effective moment of inertia was found to be almost constant in the interval I = 20-40 h, in contrast to the decreasing behaviour of the dynamic moment of inertia for the terminating yrast band. The ridge valley structures in E γ 1 × E γ 2 spectra of 114 Te and of 112 Sn were analysed with the fluctuation analysis technique. The analysis of the two nuclei are compared to simulations based on microscopic cranking calculations with residual interactions included. A rather good agreement is found between data and predictions.