Soft structures ofγ-ray strength functions studied with the Oslo method

Abstract

Abstract. We present experimental γ-ray strength functions up to E γ ∼ S n measured at the Oslo Cyclotron Laboratory for several Sc, V, Mo, and Sn isotopes. For the lighter nuclei, an unexpected enhancement of the strength function at low γ-ray energies has been revealed. This enhancement could potentially have an impact on neutron-capture cross sections for unstable, neutron-rich nuclei. For the Sn isotopes, we observe increased strength around the neutron separation energy S n .