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

Sapienza, P; Coniglione, R; Migneco, E; Agodi, C; Alba, R; Bellia, G; Colonna, M; Del Zoppo, A; Finocchiaro, P; Loukachine, K; Maiolino, C; Piattelli, P; Santonocito, D; Ventura, Pg; Colonna, N; Bruno, M; D'Agostino, M; Mastinu, Pf; Fiandri, Ml; Gramegna, F; Iori, I; Fabbietti, L; Moroni, A; Margagliotti, Giacomo; Milazzo, Pm; Rui, Rinaldo; Vannini, G; Blumenfeld, Y; Suomijarvi, T; Frascaria, N; Roynette, Jc; Scarpaci, Ja; Alamanos, N; Auger, F; Gillibert, A; Chomaz, P; Peghaire, A.

doi:10.1007/BF03035987

The emission of hard photons and pre-equilibrium protons has been investigated in exclusive experiments performed with MEDEA detector The observation of the gamma-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.

Hard photons and energetic protons as probes of the nuclear dynamics at intermediate energy / Sapienza, P., Coniglione, R., Migneco, E., Agodi, C., Alba, R., Bellia, G., Colonna, M., Del Zoppo, A., Finocchiaro, P., Loukachine, K., Maiolino, C., Piattelli, P., Santonocito, D., Ventura, P.g., Colonna, N., Bruno, M., D'Agostino, M., Mastinu, P.f., Fiandri, M.l., Gramegna, F., et al.. - In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. A, NUCLEI, PARTICLES AND FIELDS. - ISSN 1124-1861. - STAMPA. - 111/1998:8-9(1998), pp. 999-1008. (XVIth Nuclear Physics Divisional Conference Structure of Nuclei Under Extreme Conditions (SNEC 98) Padova _ ITALY MAR 31-APR 04, 1998) [10.1007/BF03035987].