40 research outputs found
Effect of the Width of Gaussian Wave Packets on the Stability of the Nuclei
The role of the range of interaction on the stability of the nuclei propagating with and without momentum dependent interactions is analyzed within the framework of Quantum Molecular Dynamics (QMD) model. A detailed study is carried out by taking different equations of state (i.e., static soft and hard and the momentum dependent soft and hard) for the selected nuclei from 12C to 197Au. Comparison is done by using the standard and the double width of the Gaussian wave packets. We find that the effect of the double width of the Gaussian wave packets on the stability of the initial stage nuclei cannot be neglected. The nuclei having double width do not emit free nucleons for a long period of time. Also, the ground state properties of all the nuclei are described well. In the low mass region, the obtained nuclei are less bound but stable. Heavy mass nuclei have proper binding energy and are stable
Momentum Dependence of Nuclear Mean Field and multifragmentation in Heavy-Ion Collisions
We report the consequences of implementing momentum dependent interactions
(MDI) on multifragmentation in heavy-ion reactions over entire collision
geometry. The evolution of a single cold nucleus using static soft equation of
state and soft momentum dependent equation of state demonstrates that inclusion
of momentum dependence increases the emission of free nucleons. However, no
heavier fragments are emitted artificially. The calculations performed within
the framework of quantum molecular dynamics approach suggest that MDI strongly
influence the system size dependence of fragment production. A comparison with
ALADiN experimental data justifies the use of momentum dependent interactions
in heavy-ion collisions