Highly deformed 40Ca configurations in 28Si+12C

M. Rousseau, C. Beck, C. Bhattacharya, V. Rauch, O. Dorvaux, K. Eddahbi, C. Enaux, R. M. Freeman, F. Haas, D. Mahboub, R. Nouicer, P. Papka, O. Stezowski, S. Szilner, A. Hachem, E. Martin, S. J. Sanders, A. K. Dummer, and A. Szanto de Toledo
Phys. Rev. C 66, 034612 – Published 24 September 2002
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Abstract

The possible occurrence of highly deformed configurations in the 40Ca dinuclear system formed in the 28Si+12C reaction is investigated by analyzing the spectra of emitted light charged particles. Both inclusive and exclusive measurements of the heavy fragments (A>~10) and their associated light charged particles (protons and α particles) have been made at the IReS Strasbourg VIVITRON Tandem facility at bombarding energies of Elab(28Si)=112MeV and 180 MeV by using the ICARE charged particle multidetector array. The energy spectra, velocity distributions, and both in-plane and out-of-plane angular correlations of light charged particles are compared to statistical-model calculations using a consistent set of parameters with spin-dependent level densities. The analysis suggests the onset of large nuclear deformation in 40Ca at high spin.

  • Received 30 January 2002

DOI:https://doi.org/10.1103/PhysRevC.66.034612

©2002 American Physical Society

Authors & Affiliations

M. Rousseau*, C. Beck, C. Bhattacharya, V. Rauch, O. Dorvaux, K. Eddahbi, C. Enaux, R. M. Freeman, F. Haas, D. Mahboub, R. Nouicer§, P. Papka, O. Stezowski, and S. Szilner

  • Institut de Recherches Subatomiques, UMR7500, Institut National de Physique Nucléaire et de Physique des Particules - Centre National de la Recherche Scientifique/Université Louis Pasteur, 23 rue du Loess, B.P. 28, F-67037 Strasbourg Cedex 2, France

A. Hachem and E. Martin

  • Université de Nice-Sophia Antipolis, F-06108 Nice, France

S. J. Sanders and A. K. Dummer

  • Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045

A. Szanto de Toledo

  • Departamento de Física Nuclear, Instituto de Física da Universidade de São Paulo, Caixo Postale 66318-05315-970 - São Paulo, Brazil

  • *Corresponding author. Email address: marc.rousseau@ires. in2p3.fr
  • Permanent address: VECC, 1/AF Bidhan Nagar, Kolkata 64, India.
  • Present address: University of Surrey, Guildford GU2 7XH, United Kingdom.
  • §Present address: Department of Physics, University of Illinois at Chicago, Chicago, IL 60607-7059.
  • Permanent address: IPN Lyon, F-69622 Villeurbanne, France.
  • Present address: Triangle Universities Nuclear Laboratory, University of North Carolina, Durham, NC 27708-0308.

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Issue

Vol. 66, Iss. 3 — September 2002

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