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Investigation of inelastic α-scattering on 24Mg and 28Si

  • A.K. Basak
  • M.N.A. Abdullah
  • A.S.B. Tariq
  • S.K. Das
  • A.F.M.M. Rahman
  • A.S. Mondal
  • H.M. Sen Gupta
  • F.B. Malik

Abstract:

Effects of three different α-nucleus potentials, the normal Woods-Saxon (WS), the squared WS and the molecular, have been studied using the differential cross-section data of inelastically scattered α-particles on 24Mg and 28Si at 54 and 26 MeV incident energies, respectively. The angular distributions of inelastic scattering to the first 2+ and 4+ states of the two nuclei have been analyzed in terms of a coupled-channel formalism. The macroscopic rotational model using both the squared WS and the molecular potentials can produce satisfactorily a simultaneous description of the elastic data and the inelastic-scattering data of the 2+ and 4+ states for both the targets. The normal WS potential fails to describe the elastic and inelastic data, simultaneously. The effects of second-order deformed potential are also investigated. Microscopic coupled-channel calculations, using the 0+-2+ coupling and the Gaussian α-nucleon interaction in the form-factor, have also been performed for the 28Si target using both the squared WS and molecular potentials, the latter one giving a reasonable description of the data.

PACS. 24.10.Eq Coupled-channel and distorted-wave models 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2001

Authors and Affiliations

  • A.K. Basak
    • 1
  • M.N.A. Abdullah
    • 1
  • A.S.B. Tariq
    • 1
  • S.K. Das
    • 1
  • A.F.M.M. Rahman
    • 1
  • A.S. Mondal
    • 1
  • H.M. Sen Gupta
    • 2
  • F.B. Malik
    • 3
  1. 1.Department of Physics, University of Rajshahi, Rajshahi, BangladeshBD
  2. 2.Department of Physics, University of Dhaka, Dhaka, BangladeshBD
  3. 3.Department of Physics, Southern Illinois University, Carbondale, IL 62901, U.S.A.US

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