Dynamical and statistical aspects of intermediate energy nucleus-nucleus collisions

Gelbke, C. K.; Boal, David H.

doi:10.1016/0146-6410(87)90003-2

Cited by 81 publications

(27 citation statements)

References 216 publications

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“…As may be noted from Fig. 1, the density of states for the 4 He and 5 Li nuclei has a fairly constant logarithmic derivative over a wide range of excitation energies, and its value is equal to 1/τ as seen from Eq. (14).…”

Section: Resultsmentioning

confidence: 73%

“…Furthermore, distortions due to the recoil of the source, fluctuations of the Coulomb barrier, besides those associated with the decay of the emitted particles, should also be taken into account [8]. In practice, the temperatures derived from the energy spectra of fragments originated from multiparticle emission are higher than expected [1,25] and may vary according to the selected species [4,8,26].…”

Section: Introductionmentioning

confidence: 99%

“…The determination of the temperature in the freezeout configuration of the system, after the most violent stages of a nuclear collision, has challenged both theorists [1][2][3][4][5][6][7][8][9] and experimentalists [4][5][6][7][8][9][10][11][12][13][14][15][16] for decades. The motivation for such studies lies in the theoretical interest in determining the properties of nuclei at finite temperatures and, more generally, of nuclear matter far from the saturation point, i.e., its equation of state.…”

Section: Introductionmentioning

confidence: 99%

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Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

et al. 2015

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The agreement between the fragments' internal and kinetic temperatures with the breakup temperature is investigated using a Statistical Multifragmentation Model which makes no a priori assumption on the relationship between them. We thus examine the conditions for obtaining such agreement and find that, in the framework of our model, this holds only in a relatively narrow range of excitation energy. The role played by the qualitative shape of the fragments' state densities is also examined. Our results suggest that the internal temperature of the light fragments may be affected by this quantity, whose behavior may lead to constant internal temperatures over a wide excitation energy range. It thus suggests that the nuclear thermometry may provide valuable information on the nuclear state density.

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Section: Resultsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

et al. 2015

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“…2, for the 4 He nucleus, at breakup (full lines) and at the asymptotic configuration (dashed lines). The breakup temperature is T = 5 MeV.…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, it is needed to construct the basic thermodynamic quantities, such as the Helmholtz free energy, from which one may obtain relevant information as, for instance, the nuclear caloric curve and the nuclear equation of state. It has, therefore, been studied both theoretically [1][2][3][4][5][6][7][8][9][10][11] and experimentally [4][5][6][7][8][9][10][12][13][14][15][16][17][18][19] by many groups over the last decades. Nevertheless, several difficulties have been found in these studies (see [7][8][9]11] and references therein), leading to ambiguities and conflicting conclusions.…”

Section: Introductionmentioning

confidence: 99%

Many-particle correlations and Coulomb effects on temperatures from fragment momentum fluctuations

2017

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We investigate correlations in the fragment momentum distribution due to the propagation of fragments under the influence of their mutual Coulomb field, after the breakup of an excited nuclear source. The magnitude of the effects on the nuclear temperatures obtained from such distributions is estimated with the help of a simple approach in which a charged fragment interacts with a homogeneous charged sphere. The results are used to correct the temperatures obtained from the asymptotic momentum distributions of fragments produced by a Monte-Carlo simulation in which the system's configuration at breakup is provided by the canonical version of the Statistical Multifragmentation Model. In a separate calculation, the dynamics of this many-particle charged system is followed in a molecular dynamics calculation until the fragments are far away from the breakup volume. The results suggest that, although the magnitude of the corrections is similar in both models, many-particle correlations present in the second approach are non-negligible and should be taken into account in order to minimize ambiguities in such studies.

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Heavy Residue Production in Dissipative 197Au + 86Kr Collisions at E/A = 35 MeV

Skulski

Djerroud

Agnihotri

et al. 1996

Advances in Nuclear Dynamics

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Dynamical and statistical aspects of intermediate energy nucleus-nucleus collisions

Cited by 81 publications

References 216 publications

Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

Many-particle correlations and Coulomb effects on temperatures from fragment momentum fluctuations

Heavy Residue Production in Dissipative 197Au + 86Kr Collisions at E/A = 35 MeV

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