Strong enhancement of extremely energetic proton production in central heavy ion collisions at intermediate energy

P. Sapienza, R. Coniglione, M. Colonna, E. Migneco, C. Agodi, R. Alba, G. Bellia, A. Del Zoppo, P. Finocchiaro, V. Greco, K. Loukachine, C. Maiolino, P. Piattelli, D. Santonocito, P. G. Ventura, Y. Blumenfeld, M. Bruno, N. Colonna, M. D'Agostino, L. FabbiettiM. L. Fiandri, F. Gramegna, I. Iori, G. V. Margagliotti, P. F. Mastinu, P. M. Milazzo, A. Moroni, R. Rui, J. A. Scarpaci, G. Vannini

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Abstract

The energetic proton production was studied up to proton energy corresponding to about 20% of the total energy available in the system. It was found that the energetic protons up to ≈110 MeV are emitted as a consequence of NN collisions in the first stage of the reaction and their characteristics are well reproduced by the BNV calculations. On the other hand, the BNV approach failed to explain the almost quadratic dependence on the number of participant nucleons of the yield of every energetic protons.

Original languageEnglish
Article number072701
Pages (from-to)072701/1-072701/4
JournalPhysical Review Letters
Volume87
Issue number7
StatePublished - 13 Aug 2001
Externally publishedYes

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