Searching for the Nuclear Liquid-Gas Phase Transition in Au + Au Collisions at 35 MeV/nucleon

M. Belkacem, Dipartimento di Fisica and INFN, Bologna, Italy / INFN, Laboratorio Nazionale del Sud, Catania, Italy
P. F. Mastinu, Dipartimento di Fisica and INFN, Bologna, Italy / Dipartimento di Fisica, Padova, Italy
V. Latora, INFN, Laboratorio Nazionale del Sud, Catania, Italy
A. Bonasera, INFN, Laboratorio Nazionale del Sud, Catania, Italy
M. D'Agostino, Dipartimento di Fisica and INFN, Bologna, Italy
M. Bruno, Dipartimento di Fisica and INFN, Bologna, Italy
J. D. Dinius, National Superconducting Cyclotron Laboratory, Michigan State University
M. L. Fiandri, Dipartimento di Fisica and INFN, Bologna, Italy
F. Gramegna, INFN, Laboratori Nazionali di Legnaro
D. O. Handzy, National Superconducting Cyclotron Laboratory, Michigan State University
W. C. Hsi, National Superconducting Cyclotron Laboratory, Michigan State University
M. Huang, National Superconducting Cyclotron Laboratory, Michigan State University
G. V. Margagliotti, Dipartimento di Fisica and INFN, Trieste, Italy
P. M. Milazzo, Dipartimento di Fisica and INFN, Trieste, Italy
C. P. Montoya, National Superconducting Cyclotron Laboratory, Michigan State University
Graham F. Peaslee, National Superconducting Cyclotron Laboratory, Michigan State UniversityFollow
R. Rui, INFN, Laboratori Nazionali di Legnaro, Italy
C. Schwarz, National Superconducting Cyclotron Laboratory, Michigan State University
G. Vannini, Dipartimento di Fisica and INFN, Trieste, Italy
C. Williams, National Superconducting Cyclotron Laboratory, Michigan State University

Document Type

Article

Publication Date

11-1-1996

Publication Source

Physical Review C

Volume Number

54

Issue Number

5

First Page

2435

Last Page

2444

Publisher

American Physical Society

Abstract

Within the framework of classical molecular dynamics, we study the collision Au+Au at an incident energy of 35 MeV/nucleon. It is found that the system shows a critical behavior at peripheral impact parameters, revealed through the analysis of conditional moments of charge distributions, Campi scatter plot, and the occurrence of large fluctuations in the region of the Campi plot where this critical behavior is expected. When applying the experimental filters of the MULTICS-MINIBALL apparatus, it is found that criticality signals can be hidden due to the inefficiency of the experimental apparatus. The signals are recovered by identifying semiperipheral and peripheral collisions looking to the velocity distribution of the largest fragment, and selecting the most complete events.

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