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The European Physical Journal A
ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)
Abstract Volume 1 Issue 2 (1998) pp 143-149
heavy ion physics: Elastic, inelastic scattering and fusion of the 14N + 59Co system at energies close to the coulomb barrier
C. Muri (1), R.M. Anjos (1), R. Cabezas (1), P.R.S. Gomes (1), S.B. Moraes (1), A.M.M. Maciel (1), G.M. Santos (1), J. Lubian (1), M.M. Sant'Anna (1), C. Tenreiro (2), R. Liguori Neto (2), J.C. Acquadro (2), P.A.B. Freitas (2) (a)
(1) Instituto de Física, Universidade Federal Fluminense, Gragoatá, Niterói, R.J., 24210-340, Brazil. fax: +55-21-6204553
(2) Instituto de Física, Universidade de S\ão Paulo, C.P. 20516, S. Paulo, 01498-970, Brazil
Received: 6 February 1997 / Revised version: 1 August 1997
Abstract: Elastic and inelastic scattering differential cross sections were measured in the energy range 30 MeV \leq Elab \leq 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
(a) Fellow of the Conselho Nacional de Desenvolvimento Cientí fico e Tecnlógico - CNPq
Communicated by C. Signorini
Present address: Departmento de Fisica, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
Online publication: February 17, 1998
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