Critical Behavior in Light Nuclear Systems: Experimental Aspects

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dc.creatorMa, Y. G.
dc.creatorNatowitz, J. B.
dc.creatorWada, R.
dc.creatorHagel, K.
dc.creatorWang, J.
dc.creatorKeutgen, T.
dc.creatorMajka, Z.
dc.creatorMurray, M.
dc.creatorQin, L.
dc.creatorSmith, P.
dc.creatorAlfaro, R.
dc.creatorCibor, J.
dc.creatorCinausero, M.
dc.creatorMasri, Y. El
dc.creatorFabris, D.
dc.creatorFioretto, E.
dc.creatorKeksis, A.
dc.creatorLunardon, M.
dc.creatorMakeev, A.
dc.creatorMarie, N.
dc.creatorMartin, E.
dc.creatorMartinez-Davalos, A.
dc.creatorMenchaca-Rocha, A.
dc.creatorNebbia, G.
dc.creatorPrete, G.
dc.creatorRizzi, V.
dc.creatorRuangma, A.
dc.creatorShetty, D. V.
dc.creatorSouliotis, G.
dc.creatorStaszel, P.
dc.creatorVeselsky, M.
dc.creatorViesti, G.
dc.creatorWinchester, E. M.
dc.creatorYennello, S. J.
dc.date2004-10-14
dc.date2005-04-14
dc.date.accessioned2026-07-07T05:37:25Z
dc.date.available2026-07-07T05:37:25Z
dc.descriptionAn extensive experimental survey of the features of the disassembly of a small quasi-projectile system with $A \sim$ 36, produced in the reactions of 47 MeV/nucleon $^{40}$Ar + $^{27}$Al, $^{48}$Ti and $^{58}$Ni, has been carried out. Nuclei in the excitation energy range of 1-9 MeV/u have been investigated employing a new method to reconstruct the quasi-projectile source. At an excitation energy $\sim$ 5.6 MeV/nucleon many observables indicate the presence of maximal fluctuations in the de-excitation processes. The fragment topological structure shows that the rank sorted fragments obey Zipf's law at the point of largest fluctuations providing another indication of a liquid gas phase transition. The caloric curve for this system shows a monotonic increase of temperature with excitation energy and no apparent plateau. The temperature at the point of maximal fluctuations is $8.3 \pm 0.5$ MeV. Taking this temperature as the critical temperature and employing the caloric curve information we have extracted the critical exponents $β$, $γ$ and $σ$ from the data. Their values are also consistent with the values of the universality class of the liquid gas phase transition. Taken together, this body of evidence strongly suggests a phase change in an equilibrated mesoscopic system at, or extremely close to, the critical point.
dc.descriptionPhysical Review C, in press; some discussions about the validity of excitation energy in peripheral collisions have been added; 24 pages and 32 figures; longer abstract in the preprint
dc.identifierhttps://arxiv.org/abs/nucl-ex/0410018
dc.identifierhttp://arxiv.org/abs/nucl-ex/0410018
dc.identifierPhys.Rev. C71 (2005) 054606
dc.identifierdoi:10.1103/PhysRevC.71.054606
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81289
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleCritical Behavior in Light Nuclear Systems: Experimental Aspects
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