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AbstractAbstract
[en] The reaction 12C + 12C has been studied for energies ranging from ELAB = 60 to 120 MeV. The excitation functions and angular distributions were obtained for the elastic (0+, 0+) and inelastic (2+, 0+), (2+, 2+) channels as well as for the transfer channels of one and two nucleons. For the transfer reactions, the feeding of the final bound states was very selective. Narrow correlated structures were found in the transfer and especially in the elastic and inelastic channels. In this energy range, there appears to be a transition from surface transparency to interference phenomena. The optical model in its simplest form is unable to describe the elastic scattering at large angles. This has been interpreted as a consequence of the coupling between the elastic and inelastic channels which is particularly strong of these energies. 80 refs
[fr]
La reaction 12C + 12C a ete etudiee a des energies de bombardement comprises entre ELAB = 60 et 120 MeV. Les fonctions d'excitation et les distributions angulaires ont ete obtenues pour les voies elastique (0+, 0+), inelastiques (2+, 0+) et (2+, 2+) ainsi que pour les voies de transfert a 1 et 2 nucleons. Une grande selectivite est observee dans l'alimentation des etats lies des noyaux produits. Des structures etroites et correlees ont ete mises en evidence dans les voies de transfert et surtout dans les voies elastique et inelastiques. Cette plage d'energie apparait comme un domaine de transition entre les phenomenes de transparence de surface et des phenomenes d'interferences. L'analyse en modele optique a une dimension ne permet pas de decrire la diffusion elastique aux grands angles. Ceci a ete interprete comme une consequence d'un couplage, particulierement fort a ces energies, des voies elastique et inelastiquesOriginal Title
La reaction 12C + 12C a des energies de bombardement comprises entre 5 et 10 MeV par nucleon
Primary Subject
Source
1986; 146 p; These (D. es Sci.).
Record Type
Report
Literature Type
Thesis/Dissertation; Numerical Data
Report Number
Country of publication
ANGULAR DISTRIBUTION, BOUND STATE, CARBON 12 REACTIONS, CARBON 12 TARGET, COINCIDENCE METHODS, CROSS SECTIONS, ELASTIC SCATTERING, EXCITATION, EXPERIMENTAL DATA, INELASTIC SCATTERING, MEV RANGE 100-1000, MEV RANGE 10-100, MULTI-NUCLEON TRANSFER REACTIO, ONE-NUCLEON TRANSFER REACTIONS, OPTICAL MODELS, POTENTIALS, RESONANCE, SCATTERING AMPLITUDES, TWO-NUCLEON TRANSFER REACTIONS
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