Comparisons of statistical multifragmentation and evaporation models for heavy-ion collisions

Tsang, M. B.; Bougault, R.; Charity, R. J.; Durand, Dominique; Friedman, William A.; Gulminelli, F.; Févre, A. Le; Raduta, Al. H.; Raduta, Ad. R.; Souza, S. R.; Trautmann, W.; Wada, R.

doi:10.1140/epja/i2006-10111-0

Cited by 34 publications

(47 citation statements)

References 53 publications

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“…10 is not exact and has been derived from a macroscopic framework where the many-body correlations are supposed to be exhausted entirely by clusterization [87]. This is a rather crude approximation because it appears to be strongly affected by conservation law, combinatorial effects [96] but also by secondary decay effects [97]. At last, Eq.…”

Section: Macroscopic Approachmentioning

confidence: 99%

Isospin effects and symmetry energy studies with INDRA

et al. 2014

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Abstract. The equation of state of asymmetric nuclear matter is still controversial, as predictions at subsaturation as well as above normal density widely diverge. We discuss several experimental results measured in heavy-ion collisions with the INDRA array in the incident energy range 5-80 A MeV. In particular an estimate of the density dependence of the symmetry energy is derived from isospin diffusion results compared with a transport code: the potential part of the symmetry energy linearly increases with the density. We demonstrate that isospin equilibrium is reached in mid-central collisions for the two reactions Ni+Au at 52 A MeV and Xe+Sn at 32 A MeV. New possible variables and an improved modelization to investigate symmetry energy are discussed.PACS. 2 5.70.Pq -2 4.60.Ky

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Section: Macroscopic Approachmentioning

confidence: 99%

Isospin effects and symmetry energy studies with INDRA

et al. 2014

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“…The de-excitation models are frequently used in the simulation of nuclear reactions and the results are usually compared in a wide range of incident energies [181,189,190,191,192,193].…”

Section: Abla07mentioning

confidence: 99%

Shannon information entropy in heavy-ion collisions

2018

Progress in Particle and Nuclear Physics

102

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The general idea of information entropy provided by C.E. Shannon "hangs over everything we do" and can be applied to a great variety of problems once the connection between a distribution and the quantities of interest is found. The Shannon information entropy essentially quantify the information of a quantity with its specific distribution, for which the information entropy based methods have been deeply developed in many scientific areas including physics. The dynamical properties of heavy-ion collisions (HICs) process make it difficult and complex to study the nuclear matter and its evolution, for which Shannon information entropy theory can provide new methods and observables to understand the physical phenomena both theoretically and experimentally. To better understand the processes of HICs, the main characteristics of typical models, including the quantum molecular dynamics models, thermodynamics models, and statistical models, etc, are briefly introduced. The typical applications of Shannon information theory in HICs are collected, which cover the chaotic behavior in branching process of hadron collisions, the liquid-gas phase transition in HICs, and the isobaric difference scaling phenomenon for intermediate mass fragments produced in HICs of neutron-rich systems. Even though the present applications in heavy-ion collision physics are still relatively simple, it would shed light on key questions we are seeking for. It is suggested to further develop the information entropy methods in nuclear reactions models, as well as to develop new analysis methods to study the properties of nuclear matters in HICs, especially the evolution of dynamics system.

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“…The description of nuclear fragmentation dynamics requires . Predicted mass distributions from five evaporation codes for neutron-deficient system 1 (left panel) and neutronrich system 2 (right panel) [41] that the proper account for the basic quantal nature of the system be taken [37].…”

Section: Heavy Ion Collisionsmentioning

confidence: 99%

“…The other difficulty to be overcome is that most statistical multifragmentation codes have been developed to describe specific sets of data and nearly all of them have different assumptions. They are not equivalent [41]. Basically, two main sets of models are used to describe the final stages of the reaction that are the multifragmentation models and the evaporation models.…”

Section: Heavy Ion Collisionsmentioning

confidence: 99%

“…Basically, two main sets of models are used to describe the final stages of the reaction that are the multifragmentation models and the evaporation models. From the data available in the literature [41], one can see (Figs. 5 and 6) that the overall behavior of the systems shows a similarity among models suggesting some predictive power as for system's behavior in the multifragmentation phenomena and allowing for suggesting physical processes responsible for the formation of fragments.…”

Section: Heavy Ion Collisionsmentioning

confidence: 99%

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Common Approaches in Description of Ordinary Liquids

Cherevko¹,

Jenkovszky

Zhang

et al. 2015

Ukr. J. Phys.

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This work is an attempt to give a brief overview of the implementation of the statistical thermodynamics to hadronic matter. The possibility to use the hydrodynamic approach for developing the physical model of the formation of exotic structures in the head-on intermediate-energy heavy ion collisions is discussed. That approach is shown to be able to provide simple analytical expressions describing each step of the collision process. This allows for extracting the data concerning nuclear matter properties (surface tension, compressibility, etc.) from the properties of observed fragments. The advantages of the thermodynamic analysis of phase trajectories of the system in heavy ion collisions are discussed. Within the thermodynamic approach, the method to evaluate the curvature correction to the surface tension from the nuclear matter equation of state is described. The possibility to use statistical thermodynamics in the studies of hadronic matter and quantum liquids is discussed.

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Comparisons of statistical multifragmentation and evaporation models for heavy-ion collisions

Cited by 34 publications

References 53 publications

Isospin effects and symmetry energy studies with INDRA

Isospin effects and symmetry energy studies with INDRA

Shannon information entropy in heavy-ion collisions

Common Approaches in Description of Ordinary Liquids

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