Microcanonical simulation of nuclear multifragmentation

Randrup, J.

doi:10.1016/0375-9474(87)90262-4

Cited by 43 publications

(26 citation statements)

References 18 publications

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“…To this aim the Thomas Fermi type formula [14] is completed with the factor exp(−ǫ/τ ) (see Ref. [16]):…”

Section: (I) Primary Break-up Refinementsmentioning

confidence: 99%

Microcanonical studies concerning the recent experimental evaluations of the nuclear caloric curve

Raduta

2000

Phys. Rev. C

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The microcanonical multifragmentation model from [Al. H. Raduta and Ad. )] is refined and improved by taking into account the experimental discrete levels for fragments with A ≤ 6 and by including the stage of sequential decay of the primary excited fragments. The caloric curve is reevaluated and the heat capacity at constant volume curve is represented as a function of excitation energy and temperature. The sequence of equilibrated sources formed in the reactions studied by the ALADIN group ( 197 Au+ 197 Au at 600, 800 and 1000 MeV/nucleon bombarding energy) is deduced by fitting simultaneously the model predicted mean multiplicity of intermediate mass fragments (M IM F ) and charge asymmetry of the two largest fragments (a 12 ) versus bound charge (Z bound ) on the corresponding experimental data. Calculated HeLi isotopic temperature curves as a function of the bound charge are compared with the experimentally deduced ones.

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“…To this aim the Thomas Fermi type formula [14] is completed with the factor exp(−ǫ/τ ) (see Ref. [16]):…”

Section: (I) Primary Break-up Refinementsmentioning

confidence: 99%

Microcanonical studies concerning the recent experimental evaluations of the nuclear caloric curve

Raduta

2000

Phys. Rev. C

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“…Bugaev et al [23] have taken the model beyond this range of density and find that the critical density is ρ/ρ 0 = 1 and the temperature is 18 MeV when the surface tension σ(T ) goes to zero. We end this section by noting that microcanonical calculations using statistical equilibrium were also suggestive of a first order phase transition occurring at intermediate energy [24,6].…”

Section: Signatures From Thermodynamic Variablesmentioning

confidence: 99%

“…At these energies, the efforts switched to microcanonical ensembles although the concept of temperature was sometimes used [6,7,8]. One model called the Copenhagen SMM (statistical multifragmentation model) is frequently used [8].…”

Section: Introductionmentioning

confidence: 99%

The thermodynamic model for nuclear multifragmentation

et al. 2005

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“…The difficulty is due to the nontrivial dynamical effects contained in the experimental data. Even though it may be true that the part of the system is equilibrated in good approximation as is indicated by the success of statistical models [1,21,22,23], the ambiguities enter in the data analysis through the identification of the equilibrated thermal source. On the other hand, there are several models which can predict the experimental observables without such ambiguities by simulating the dynamics of these reactions microscopically [24,25,26,27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Nuclear Liquid-Gas Phase Transition Studied with Antisymmetrized Molecular Dynamics

Furuta¹,

Ono²

2004

Prog. Theor. Phys. Suppl.

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The nuclear liquid-gas phase transition of the system in ideal thermal equilibrium is studied with antisymmetrized molecular dynamics. The time evolution of a many-nucleon system confined in a container is solved for a long time to get a microcanonical ensemble of a given energy and volume. The temperature and the pressure are extracted from this ensemble and the caloric curves are constructed. The present work is the first time that a microscopic dynamical model which describes nuclear multifragmentation reactions well is directly applied to get the nuclear caloric curve. The obtained constant pressure caloric curves clearly show the characteristic feature of the liquid-gas phase transition, namely negative heat capacity (backbending), which is expected for the phase transition in finite systems.

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Microcanonical simulation of nuclear multifragmentation

Cited by 43 publications

References 18 publications

Microcanonical studies concerning the recent experimental evaluations of the nuclear caloric curve

Microcanonical studies concerning the recent experimental evaluations of the nuclear caloric curve

The thermodynamic model for nuclear multifragmentation

Nuclear Liquid-Gas Phase Transition Studied with Antisymmetrized Molecular Dynamics

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