The roles of deformation and orientation in heavy-ion collisions induced by light deformed nuclei at intermediate energy

TL;DR

This study uses an isospin-dependent quantum molecular dynamics model to analyze how deformation and orientation affect reaction dynamics in light deformed nuclei collisions at intermediate energy, revealing sensitivity of observables to initial conditions.

Contribution

It systematically investigates the impact of deformation and orientation on reaction dynamics using IDQMD, highlighting the sensitivity of key observables and the existence of eccentricity scaling.

Findings

Reaction dynamics vary significantly with deformation and orientation.

Observables like nuclear stopping power and elliptic flow are highly sensitive.

Eccentricity scaling of elliptic flow observed in central collisions.

Abstract

The reaction dynamics of axisymmetric deformed $^{24}$Mg + $^{24}$Mg collisions have been investigated systematically by an isospin-dependent quantum molecular dynamics (IDQMD) model. It is found that different deformations and orientations result in apparently different properties of reaction dynamics. We revealed that some observables such as nuclear stopping power ($R$), multiplicity of fragments, and elliptic flow are very sensitive to the initial deformations and orientations. There exists an eccentricity scaling of elliptic flow in central body-body collisions with different deformations. In addition, the tip-tip and body-body configurations turn out to be two extreme cases in central reaction dynamical process.