Hard photons and energetic protons as probes of the nuclear dynamics at intermediate energy

P. Sapienza, R. Coniglione, E. Migneco, C. Agodi, R. Alba, G. Bellia, M. Colonna, A. Del Zoppo, P. Finocchiaro, K. Loukachine, C. Maiolino, P. Piattelli, D. Santonocito, P. G. Ventura, N. Colonna, M. Bruno, M. D'Agostino, P. F. Mastinu, M. L. Fiandri, F. GramegnaI. Iori, L. Fabbietti, A. Moroni, G. V. Margagliotti, P. M. Milazzo, R. Rui, G. Vannini, Y. Blumenfeld, T. Suomijarvi, N. Frascaria, J. C. Roynette, J. A. Scarpaci, N. Alamanos, F. Auger, A. Gillibert, E. Chomaz, A. Peghaire

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The emission of hard photons and pre-equilibrium protons has been investigated in exclusive experiments performed with MEDEA detector. The observation of the γ-proton anticorrelation indicates that the dominant production mechanism is the first-chance neutron-proton (np) collisions. The anisotropic angular distributions point out the presence of screening effects and are reminiscent of the free np scattering thus giving information of the space-time origin of the energetic protons. Protons, with energy more than twice the kinematical limit for nucleon-nucleon (NN) collisions, have been observed in several reactions around the Fermi energy.

Original languageEnglish
Pages (from-to)999-1008
Number of pages10
JournalIl Nuovo Cimento A
Issue number8-9
StatePublished - 1998
Externally publishedYes


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