1997/11/07 by R. Nouicer, Ch. Beck, Nouicer, R. +7
Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear physics research studies #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.nucl-ex/9711002
openalex publication_date 1997/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Fragment-fragment-γ triple coincident measurements of the 28Si + 28Si reaction at Elab. = 111.6 MeV carefully chosen to populate J = 38+ resonance have been performed at the VIVITRON tandem facility by using Eurogam Phase II γ-ray spectrometer. In the 28Si + 28Si exit-channel, the resonance behavior of the 28Si + 28Si reaction at the beam energy is clearly confirmed. An unexpected spin disalignment has been observed in the measured angular distributions in the elastic, inelastic, and mutual excitation channels. This disalignment is found to be consistent with particle-γ angular correlations and supported by the molecular model prediction of a "butterfly motion". The Kπ = 0+3 band corresponding to the large prolate deformation of the 28Si is more intensely fed in the resonance region. The selective population of high-excited states are discussed within a statistical fusion-fission model. In the 32S + 24Mg exit-channel, the spectroscopic study of the 32S, has revealed the contribution of a new γ-ray transition 0+ (8507.8 keV) → 2+1 (2230.2 keV) .