Anisotropic distribution of nucleon participating in elliptical flow

TL;DR

This study uses quantum molecular dynamics simulations to explore how charge asymmetry and isospin-dependent cross-sections influence the anisotropic distribution of nucleons in elliptical flow, revealing strong dependencies and asymmetries.

Contribution

It introduces a detailed analysis of isospin effects on nucleon distribution in elliptical flow using advanced simulation models.

Findings

Distribution depends strongly on isospin of cross-section

Charge asymmetry significantly affects nucleon distribution

Distribution is asymmetric around the beam axis

Abstract

Using the isospin dependent quantum molecular dynamics model, we study the effect of charge asymmetry and isospin dependent cross-section on $\frac{dN}{d(<Cos2\phi>)}$ and $\frac{dN}{p_tdp_t}$. Simulations have been carried out for the reactions of $^{124}X_{m}+^{124}X_{m}$, where m = (47, 50 and 59) and $^{40}S_{16}+^{40}S_{16}$. Our study shows that these parameters depend strongly on the isospin of cross-section and charge asymmetry. The distribution of nucleons and fragments is not symmetric around the beam axis.