Phys. Rev. C 65, 014611 (2001) [7 pages]Deformation effects in 56Ni nuclei produced in 28Si+28Si at 112 MeVReceived 21 May 2001; published 20 December 2001 Velocity and energy spectra of the light charged particles emitted in the 28Si(Elab=112 MeV)+28Si reaction have been measured at the Strasbourg VIVITRON Tandem facility. The ICARE charged particle multidetector array was used to obtain exclusive spectra of the protons and α particles in the angular range 15°–150° and to determine the angular correlations of these particles with respect to the emission angles of the evaporation residues. The experimental data are analyzed in the framework of the statistical model. The exclusive energy spectra of α particles emitted from the 28Si+28Si compound system are generally well reproduced by Monte Carlo calculations using spin-dependent level densities. This spin dependence approach suggests the onset of large nuclear deformation at high spin. A reanalysis of previous α-particle data from the 30Si+30Si compound system, using the same spin-dependent parametrization, is also presented in the framework of a general discussion of deformation effects in the ACN≈60 mass region. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.014611
DOI:
10.1103/PhysRevC.65.014611
PACS:
25.70.Gh, 25.70.Jj, 24.60.Dr
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