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
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.
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