Effect of Flow on Caloric Curve for Finite Nuclei
نویسنده
چکیده
In a finite temperature Thomas-Fermi theory, we construct caloric curves for finite nuclei enclosed in a freeze-out volume few times the normal nuclear volume, with and without inclusion of flow. Without flow, the caloric curve indicates a smooth liquid-gas phase transition whereas with flow, the transition may be very sharp. We discuss these results in the context of two recent experiments, one for heavy symmetric system (Au + Au at 600A MeV) and the other for highly asymmetric system (Au + C at 1A GeV) where different behaviours in the caloric curves are seen.
منابع مشابه
Caloric Curve for Finite Nuclei in Thomas-fermi Theory
In a finite temperature Thomas-Fermi theory with realistic nuclear interactions, we construct caloric curves for finite nuclei enclosed in a sphere of about 4− 8 times the normal nuclear volume. The specific heat capacity Cv shows a peaked structure that is possibly indicative of a liquid-gas phase transition in finite nuclear systems.
متن کاملCaloric curve for finite nuclei in relativistic models
In this work we calculate the caloric curve (excitation energy per particle as a function of temperature) for finite nuclei within the non–linear Walecka model for different proton fractions. It is shown that the caloric curve is sensitive to the proton fraction. Freeze-out volume effects in the caloric curve are also studied. The production of several intermediate mass fragments in a short tim...
متن کاملCorrecting the stress-strain curve in hot compression test using finite element analysis and Taguchi method
In the hot compression test friction has a detrimental influence on the flow stress through the process and therefore, correcting the deformation curve for real behavior is very important for both researchers and engineers. In this study, a series of compression tests were simulated using Abaqus software. In this study, it has been employed the Taguchi method to design experiments by the factor...
متن کاملCaloric curve for mononuclear configurations.
The caloric curve for mononuclear configurations is studied with a schematic model. We investigate the dependence of the entropy on the density and effective-mass profiles. In finite nuclei, a plateau in the caloric curve is a consequence of decreasing density and the destruction of correlations rather than an indication of phase coexistence. The mononuclear regime is metastable with respect to...
متن کامل- th / 0 10 80 58 v 1 2 4 A ug 2 00 1 Relativistic Thomas - Fermi description of Sm isotopes at finite temperature
The caloric curve (excitation energy per particle as a function of temperature) for finite nuclei is calculated within the non–linear Walecka model for different proton fractions and different parameterizations. The results obtained are compared with published experimental data and other theoretical results. Other properties related with the droplet formation as the surface energy, neutron skin...
متن کامل