J.N. De

Thermostatic properties of finite and infinite nuclear systems

Abstract From a constructed finite-range momentum- and density-dependent effective interaction, we arrive at the equation of state for infinite nuclear matter. This interaction reproduces ground-state properties of finite nuclear systems; in addition it gives a proper energy dependence of the single-particle potential. For symmetric and asymmetric hot nuclear matter, we find the critical and phase-separation temperature, the specific heats, incompressibility and variations of effective mass with temperature and density. For finite nuclei, we also find the limiting temperature, i.e. the maximum temperature that such nuclear systems can sustain.

Determining the density content of symmetry energy and neutron skin: an empirical approach.

The density dependence of nuclear symmetry energy remains poorly constrained. Starting from precise empirical values of the nuclear volume and surface symmetry energy coefficients and the nuclear saturation density, we show how in the ambit of microscopic calculations with different energy density functionals, the value of the symmetry energy slope parameter L along with that for neutron skin can be put in tighter bounds. The value of L is found to be L=64±5  MeV. For 208Pb, the neutron skin thickness comes out to be 0.188±0.014  fm. Knowing L, the method can be applied to predict neutron skin thicknesses of other nuclei.

Incompressibility of asymmetric nuclear matter

Abstract The equation of state of asymmetric nuclear matter, calculated with the Seyler-Blanchard (SB) interaction is exploited to find the asymmetry and temperature dependence the incompressibility of nuclear matter. The incompressibility is found to decrease with both asymmetry and temperature. The results are compared with those obtained from previous calculations and recent experimental findings. The ratio of specific heats is found to increase with asymmetry at all temperatures.

Nuclear shape transition at finite temperature in a relativistic mean field approach

The relativistic Hartree-BCS theory is applied to study the temperature dependence of nuclear shape and pairing gap for

The role of asymmetry on critical and limiting temperature

{}^{166}\mathrm{Er}

The effect of flow on nuclear multifragmentation in a quantum statistical model

and

Shape transition in some rare earth nuclei in relativistic mean field theory

{}^{170}\mathrm{Er}.

Constraining the density dependence of the symmetry energy from nuclear masses

For both the nuclei, we find that as temperature increases the pairing gap vanishes leading to phase transition from superfluid to normal phase as is observed in nonrelativistic calculation. The deformation evolves from prolate shapes to spherical shapes at

Liquid-gas phase transition in nuclei in the relativistic Thomas-Fermi theory

T\ensuremath{\sim}2.7

Isospin-rich nuclei in neutron star matter

MeV. Comparison of our results for heat capacity with the ones obtained in the nonrelativistic mean field framework indicates that in the relativistic mean field theory the shape transition occurs at a temperature about 0.9 MeV higher and is relatively weaker. The effect of thermal shape fluctuations on the temperature dependence of deformation is also studied. Relevant results for the level density parameter are further presented.