Elastic, inelastic scattering and fusion of the 14N + 59Co system at energies close to the coulomb barrier
C. Muri1 - R.M. Anjos1 - R. Cabezas1 - P.R.S. Gomes1 - S.B. Moraes1 - A.M.M. Maciel1 - G.M. Santos1 - J. Lubian1 - M.M. Sant'Anna1 - C. Tenreiro2 - R. Liguori Neto2 - J.C. Acquadro2 - P.A.B. Freitas2
1 Instituto de Física, Universidade Federal Fluminense,
Gragoatá, Niterói, R.J., 24210-340, Brazil. fax: +55-21-6204553
2 Instituto de Física, Universidade de São Paulo, C.P. 20516, S.
Paulo, 01498-970, Brazil
Received: 6 February 1997 / Revised version: 1 August 1997 Communicated by C. Signorini
Abstract
Elastic and inelastic scattering differential cross sections were
measured in the energy range 30 MeV 
Elab 55 MeV, for the
14N + 59Co system. Ambiguities of the optical potential derived
from the analysis of the elastic scattering data were removed by performing
calculations at the radius of sensitivity and by comparison with the
available fusion cross section data. A simultaneous analysis of the three
mechanisms was performed by coupled channel calculations, and a unique
energy independent nuclear potential was found to be able to fit the data.
Discussions and comparisons concerning the optical model, the threshold
anomaly, full and approximated coupled channel calculations are presented.
PACS
24.10.Eq Coupled-channel and distorted-wave models -
24.10.Ht Optical and diffraction models -
25.45.De Elastic and inelastic scattering -
25.70.Jj Fusion and fusion-fission reactions
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