Contribution to the study of heavy ion transfer reactions. Problems of optical potential and core excitation
Creators
Description
The experimental study of the following transfer reactions is presented: 64Ni(16O,15N)65Cu at 56MeV and 64Ni(12C,11B)65Cu at 48MeV; 64Ni(16O,14C)66Zn at 56 MeV and 64Ni(12C,10Be)66Zn at 48 MeV; and (16O,14C) reactions on 76Ge, 74Ge and 72Ge targets. It is shown that the shape of the angular distributions can be explained by studying reaction mechanisms. For the first reactions DWBA calculations are in agreement with the experimental results and show the importance of recoil effects in heavy ion induced reactions. Similar effects appear in the second-type reactions where the description of the two nucleons transferred play a major part in the intensity of the cross sections. As for Ge nuclei which have states with strong collective structure, the study of two proton transfer reactions such as (16O, 14C) reveals a two-step reaction mechanism. CCBA calculations were carried out and are shown to be in good agreement with the angular distributions
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
On presente l'etude experimentale des reactions de transfert suivantes: 64Ni(16O,15N)65Cu a 56MeV et 64Ni(12C,11B)65Cu a 48MeV; 64Ni(16O,14C)66Zn a 56 MeV et 64Ni(12C,10Be)66Zn a 48 MeV; enfin (16O,14C) sur 76Ge, 74Ge et 72Ge. On a montre que la forme des distributions angulaires peut s'expliquer par une etude du mecanisme de la reaction. Pour les premieres, le calcul DWBA reproduit bien les resultats experimentaux et montre l'importance des effets de recul dans les reactions induites par ions lourds. Des effets similaires se retrouvent pour les secondes, ou la description des deux nucleons dans les noyaux incident et residuel joue un grand role sur l'intensite des sections efficaces. Dans les noyaux de Ge possedant des etats a structure fortement collective, l'etude des transferts de 2 protons du type (16O,14C), met en evidence un mecanisme de reaction en 2 etapes. On a effectue un calcul CCBA qui rend bien compte des mesures des distributions angulairesFiles
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Additional details
Additional titles
- Original title (French)
- Contribution a l'etude des reactions de transfert induites par ions lourds. Problemes de potentiel optique et d'excitation du coeur
Publishing Information
- Imprint Pagination
- 131 p.
- Report number
- FRNC-TH--568
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 7230268
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ANGULAR DISTRIBUTION; BORON 11; CARBON 12 REACTIONS; COPPER 65; CROSS SECTIONS; DWBA; NICKEL 64 TARGET; NITROGEN 15; NUCLEAR REACTION KINETICS; ONE-NUCLEON TRANSFER REACTIONS; OXYGEN 16 REACTIONS
- Descriptors DEC
- BORN APPROXIMATION; BORON ISOTOPES; COPPER ISOTOPES; DIRECT REACTIONS; DISTRIBUTION; HEAVY ION REACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; KINETICS; LIGHT NUCLEI; NITROGEN ISOTOPES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; REACTION KINETICS; STABLE ISOTOPES; TARGETS; TRANSFER REACTIONS