Neutron capture study on several lutetium isotopes: 'what improvements could be extracted from it for better describing the process in the reaction models?'

Neutron capture studies remain up to now a topic of interest for many domains, from nuclear astrophysics to nuclear reactors physics. These common nuclear reactions are still not well predicted by reaction models, all the more when nuclei are more exotic. In this document, through several experimental results obtained using rare Lutetium targets, we notice which improvements could be made to get better cross section predictions for this process on Lu isotopes. One focus will be done on the surrogate method which is a method to obtain information on neutron induced reactions using transfer or inelastic scattering nuclear reactions. Results from experiments performed at Orsay Laboratory and Texas A.M. University facilities will be described. The work presented here is a fruitful large work from collaborations between US laboratories (LANL and LLNL) and CENBG French laboratory. Finally, prospective on the study of reaction models ingredients like nuclear level density and gamma strength function will be given in order to answer remaining questions. (author)