https://doi.org/10.1140/epja/i2005-10195-x
Nuclear Structure and Reactions
Measurements of isomeric cross-section ratios for neutron capture in the resonances region
1
CEA/DIF/DPTA Service de Physique Nucléaire, BP 12, F-91680, Bruyères-le-Châtel, France
2
CEA/DIF/DASE Service de Radioanalyse, Chimie et Environnement, BP 12, F-91680, Bruyères-le-Châtel, France
3
CEA/DSM/DAPNIA/SPhN CEA-Saclay, F-91191, Gif-sur-Yvette, France
* e-mail: xavier.ledoux@cea.fr
Received:
7
July
2005
Accepted:
16
January
2006
Published online:
3
February
2006
The creation of isomeric nuclei by neutron capture in the resonances energy range was studied with the lead slowing-down assembly CIRENE. The isomeric-ratio measurement of 8 nuclei allows to determine the spin of the compound nucleus at the binding energy. An experiment on 177Lu underlines the role of the spin of a resonance on the isomeric-state feeding probability.
PACS: 23.20.Lv γ transitions and level energies – / 24.60.Dr Statistical compound-nucleus reactions – / 25.40.Ny Resonance reactions – / 29.30.Kv X- and γ-ray spectroscopy –
© Società Italiana di Fisica and Springer-Verlag, 2006
