Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects

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. Fabbietti; M. L. Fiandri; F. Gramegna; I. Iori; G. V. Margagliotti; P. F. Mastinu; P. M. Milazzo; A. Moroni; R. Rui; J. A. Scarpaci; G. Vannini

doi:10.1556/APH.16.2002.1-4.36

Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects

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

Energetic proton emission has been investigated as a function of the centrality in the reaction ⁵⁸Ni + ⁵⁸Ni at 30 AMeV. Protons with energy extending up to a relevant fraction of the total available energy in the reaction were measured and studied. The dependence on the reaction centrality has been extensively investigated and data have been compared with the results of microscopic transport calculations. The more striking observation concerns the extremely energetic proton (E^NN_p ≥ 130 MeV) multiplicity which is found to increase almost quadratically with the number of participant nucleons thus indicating the onset of a mechanism beyond one and two-body dynamics.

Original language	English
Pages (from-to)	337-346
Number of pages	10
Journal	Acta Physica Hungarica New Series Heavy Ion Physics
Volume	16
Issue number	1-4
DOIs	https://doi.org/10.1556/APH.16.2002.1-4.36
State	Published - 2002
Externally published	Yes

Keywords

Pre-equilibrium
Subthreshold emission

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10.1556/APH.16.2002.1-4.36

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Sapienza, P., Coniglione, R., Colonna, M., Migneco, E., Agodi, C., Alba, R., Bellia, G., Del Zoppo, A., Finocchiaro, P., Greco, V., Loukachine, K., Maiolino, C., Piattelli, P., Santonocito, D., Ventura, P. G., Blumenfeld, Y., Bruno, M., Colonna, N., D'Agostino, M., ... Vannini, G. (2002). Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects. Acta Physica Hungarica New Series Heavy Ion Physics, 16(1-4), 337-346. https://doi.org/10.1556/APH.16.2002.1-4.36

@article{77c2b4ddad56404ab1f3df9f10423ae2,

title = "Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects",

abstract = "Energetic proton emission has been investigated as a function of the centrality in the reaction 58Ni + 58Ni at 30 AMeV. Protons with energy extending up to a relevant fraction of the total available energy in the reaction were measured and studied. The dependence on the reaction centrality has been extensively investigated and data have been compared with the results of microscopic transport calculations. The more striking observation concerns the extremely energetic proton (ENNp ≥ 130 MeV) multiplicity which is found to increase almost quadratically with the number of participant nucleons thus indicating the onset of a mechanism beyond one and two-body dynamics.",

keywords = "Pre-equilibrium, Subthreshold emission",

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

year = "2002",

doi = "10.1556/APH.16.2002.1-4.36",

language = "English",

volume = "16",

pages = "337--346",

journal = "Acta Physica Hungarica New Series Heavy Ion Physics",

issn = "1219-7580",

publisher = "Akademiai Kiado",

number = "1-4",

}

Sapienza, P, Coniglione, R, Colonna, M, Migneco, E, Agodi, C, Alba, R, Bellia, G, Del Zoppo, A, Finocchiaro, P, Greco, V, Loukachine, K, Maiolino, C, Piattelli, P, Santonocito, D, Ventura, PG, Blumenfeld, Y, Bruno, M, Colonna, N, D'Agostino, M, Fabbietti, L, Fiandri, ML, Gramegna, F, Iori, I, Margagliotti, GV, Mastinu, PF, Milazzo, PM, Moroni, A, Rui, R, Scarpaci, JA & Vannini, G 2002, 'Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects', Acta Physica Hungarica New Series Heavy Ion Physics, vol. 16, no. 1-4, pp. 337-346. https://doi.org/10.1556/APH.16.2002.1-4.36

TY - JOUR

T1 - Energetic proton emission in heavy ion collisions at intermediate energy

T2 - Pre-equilibrium and cooperative effects

AU - Sapienza, P.

AU - Coniglione, R.

AU - Colonna, M.

AU - Migneco, E.

AU - Agodi, C.

AU - Alba, R.

AU - Bellia, G.

AU - Del Zoppo, A.

AU - Finocchiaro, P.

AU - Greco, V.

AU - Loukachine, K.

AU - Maiolino, C.

AU - Piattelli, P.

AU - Santonocito, D.

AU - Ventura, P. G.

AU - Blumenfeld, Y.

AU - Bruno, M.

AU - Colonna, N.

AU - D'Agostino, M.

AU - Fabbietti, L.

AU - Fiandri, M. L.

AU - Gramegna, F.

AU - Iori, I.

AU - Margagliotti, G. V.

AU - Mastinu, P. F.

AU - Milazzo, P. M.

AU - Moroni, A.

AU - Rui, R.

AU - Scarpaci, J. A.

AU - Vannini, G.

PY - 2002

Y1 - 2002

N2 - Energetic proton emission has been investigated as a function of the centrality in the reaction 58Ni + 58Ni at 30 AMeV. Protons with energy extending up to a relevant fraction of the total available energy in the reaction were measured and studied. The dependence on the reaction centrality has been extensively investigated and data have been compared with the results of microscopic transport calculations. The more striking observation concerns the extremely energetic proton (ENNp ≥ 130 MeV) multiplicity which is found to increase almost quadratically with the number of participant nucleons thus indicating the onset of a mechanism beyond one and two-body dynamics.

AB - Energetic proton emission has been investigated as a function of the centrality in the reaction 58Ni + 58Ni at 30 AMeV. Protons with energy extending up to a relevant fraction of the total available energy in the reaction were measured and studied. The dependence on the reaction centrality has been extensively investigated and data have been compared with the results of microscopic transport calculations. The more striking observation concerns the extremely energetic proton (ENNp ≥ 130 MeV) multiplicity which is found to increase almost quadratically with the number of participant nucleons thus indicating the onset of a mechanism beyond one and two-body dynamics.

KW - Pre-equilibrium

KW - Subthreshold emission

UR - http://www.scopus.com/inward/record.url?scp=0036920237&partnerID=8YFLogxK

U2 - 10.1556/APH.16.2002.1-4.36

DO - 10.1556/APH.16.2002.1-4.36

M3 - Article

AN - SCOPUS:0036920237

SN - 1219-7580

VL - 16

SP - 337

EP - 346

JO - Acta Physica Hungarica New Series Heavy Ion Physics

JF - Acta Physica Hungarica New Series Heavy Ion Physics

IS - 1-4

ER -

Energetic proton emission in heavy ion collisions at intermediate energy: Pre-equilibrium and cooperative effects

Abstract

Keywords

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