par Kopecky, J.;Goriely, Stéphane ;Péru, S.;Hilaire, Stéphane;Martini, M
Référence Physical review. C. Nuclear physics, 95, page (054317)
Publication Publié, 2017-05-22
Article révisé par les pairs
Résumé : The average resonance capture (ARC) data measured at different filter beam facilities are re-analyzed. They include all measurements made between 1970 and 1990, but only partially exploited. Updated spectroscopic information on the states of interest as well as on s-wave resonance spacing are used to extract the E1 and M1 photon strength function. This re-evaluation aims at providing experimental information on the E1 and M1 strength function around the neutron binding energy and in doing so provides also constraints for existing models used in statistical reaction codes. The revised data are compared to the photon strength function extracted from other experimental methods, such as photoneutron data and Oslo-method data. We also compare the ARC data with recent quasiparticle random phase approximation calculations based on the D1M Gogny force. The ratio of the E1 to M1 strength functions is also analyzed and proposed as a new stringent test for the future elaboration of theoretical models for the dipole strength function.