Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8186422 | Physics Letters B | 2018 | 6 Pages |
Abstract
High energy gamma-rays from the 116Sn + 24Mg reaction at 23A MeV were measured using the MEDEA detector at LNS - INFN Catania. Combining this new data with previous measurements yields a detailed view of the quenching of the Giant Dipole Resonance as a function of excitation energy in nuclei of mass A in the range 120÷132. The transition towards the disappearance of the dipole strength, which occurs around 230 MeV excitation energy, appears to be remarkably sharp. Current phenomenological models give qualitative explanations for the quenching but cannot reproduce its detailed features.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
D. Santonocito, Y. Blumenfeld, C. Maiolino, C. Agodi, R. Alba, G. Bellia, R. Coniglione, A. Del Zoppo, F. Hongmei, E. Migneco, P. Piattelli, P. Sapienza, L. Auditore, G. Cardella, E. De Filippo, E. La Guidara, C. Monrozeau, M. Papa, O. Wieland,