Multifragment Production in Reactions of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>112</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>n</mml:mi><mml:mo>+</mml:mo><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>112</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></

Kunde, G. J.; Gaff, S. J.; Gelbke, C. K.; Glasmacher, T.; Huang, M. J.; Lemmon, R. C.; Lynch, W. G.; Manduci, L.; Martin, L.; Tsang, M. B.; Friedman, William A.; Dempsey, James F.; Charity, R. J.; Sobotka, L. G.; Agnihotri, D. K.; Djerroud, B.; Schröder, W. U.; Skulski, W.; Tōke, J.; Wyrozebski, K.

doi:10.1103/physrevlett.77.2897

Cited by 64 publications

(45 citation statements)

References 21 publications

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“…In particular, particle production from the overlap participant region dominates in central collisions [9][10][11][12], and the transverse energy from this region is strongly affected by the collective motion [13]. There has never been any unambiguous experimental evidence supporting that √ E t is proportional to the temperature and in fact the evidence is to the contrary.…”

mentioning

confidence: 94%

Nuclear Arrhenius-Type Plots

Tsang¹,

Danielewicz²

1998

Phys. Rev. Lett.

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Arrhenius-type plots for multifragmentation process, defined as the transverse energy dependence of the single-fragment emission-probability, (ln(1/p b ) vs 1/ √ E t ), have been studied by examining the relationship of the parameters p b and E t to the intermediate-mass fragment multiplicity n . The linearity of these plots reflects the correlation of the fragment multiplicity with the transverse energy. These plots may not provide thermal scaling information about fragment production as previously suggested.Typeset using REVT E X 1

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mentioning

confidence: 94%

Nuclear Arrhenius-Type Plots

Tsang¹,

Danielewicz²

1998

Phys. Rev. Lett.

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“…different asymmetry in the liquid and gas phases) in central collisions was in fact observed in 124 Sn+ 124 Sn and 112 Sn+ 112 Sn reactions at 40AMeV , [168], where the correlations between the average number < N IM F > of IMF s and the multiplicities of charged particles N C , of light-charged particles N LC (Z ≤ 2), and neutrons N n were measured. It was shown, [168,169], that in the n-rich 124 Sn + 124 Sn case the multiplicity of the emitted neutrons N n for the maximum value of < N IM F > was much larger than expected from the neutron excess of the 124+124 system. A clear Neutron Distillation effect was seen for the first time, associated to the largest yield of fragment formation: very n-rich gas phase coexisting with a more symmetric cluster phase, the so-called healthier fragments of ref.…”

Section: Isospin Distillation and Isoscalingmentioning

confidence: 99%

Reaction dynamics with exotic nuclei

et al. 2005

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Iste magistrorum locus est simul et puerorum, mittunt quando volunt hic res quas perdere nolunt [1]. AbstractWe review the new possibilities offered by the reaction dynamics of asymmetric heavy ion collisions, using stable and unstable beams. We show that it represents a rather unique tool to probe regions of highly Asymmetric Nuclear Matter (AN M ) in compressed as well as dilute phases, and to test the in-medium isovector interaction for high momentum nucleons. The focus is on a detailed study of the symmetry term of the nuclear Equation of State (EOS) in regions far away from saturation conditions but always under laboratory controlled conditions. Thermodynamic properties of AN M are surveyed starting from nonrelativistic and relativistic effective interactions. In the relativistic case the role of the isovector scalar δ-meson is stressed. The qualitative new features of the liquid-gas phase transition, "diffusive" instability and isospin distillation, are discussed. The results of ab-initio simulations of n-rich, n-poor, heavy ion collisions, using stochastic isospin dependent transport equations, are analysed as a function of beam energy and centrality. The isospin dynamics plays an important role in all steps of the reaction, from prompt nucleon emissions to the final fragments. The isospin diffusion is also of large interest, due to the interplay of asymmetry and density gradients. In relativistic collisions, the possibility of a direct study of the covariant structure of the effective nucleon interaction is shown. Results are discussed for particle production, collective flows and iso-transparency.Perspectives of further developments of the field, in theory as well as in experiment, are presented.

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“…The study of these fragments provides clues to the nuclear liquid-gas phase transition as they are considered as droplets formed from the condensation of nuclear gas and may provide information about the co-existence region. [36] are much larger than those predicted by all the models after decay. The discrepancies between model predictions and data are not understood.…”

Section: A Imf Multiplicitiesmentioning

confidence: 64%

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

Tsang¹,

Bougault²,

Charity³

et al. 2006

Dynamics and Thermodynamics With Nuclear Degrees of Freedom

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The results from ten statistical multifragmentation models have been compared with each other using selected experimental observables. Even though details in any single observable may differ, the general trends among models are similar. Thus these models and similar ones are very good in providing important physics insights especially for general properties of the primary fragments and the multifragmentation process. Mean values and ratios of observables are also less sensitive to individual differences in the models. In addition to multifragmentation models, we have compared results from five commonly used evaporation codes. The fluctuations in isotope yield ratios are found to be a good indicator to evaluate the sequential decay implementation in the code. The systems and the observables studied here can be used as benchmarks for the development of statistical multifragmentation models and evaporation codes.

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Multifragment Production in Reactions ofS112n+S112

Cited by 64 publications

References 21 publications

Nuclear Arrhenius-Type Plots

Nuclear Arrhenius-Type Plots

Reaction dynamics with exotic nuclei

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

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