Collective flow in heavy ion collisions at intermediate energies

TL;DR

This paper analyzes collective flow in heavy ion collisions at intermediate energies, examining how flow parameters depend on centrality and transverse momentum, with detailed measurements of isotopic effects using the INDRA detector.

Contribution

It provides new experimental data on directed and elliptic flow for specific isotopic reactions at 100 and 150 A MeV, highlighting small isotopic effects.

Findings

Flow parameters follow expected trends

Isotopic effects are small

Flow depends on centrality and p_t

Abstract

We present results of a flow analysis for the set of reactions of 124,129Xe projectiles and 112,124Sn targets at incident energies 100 and 150 A MeV studied with the INDRA detector at GSI. The dependence on centrality and on p_t of the directed and elliptic flow are determined for isotopically selected reaction products with Z \le 3. The flow parameters v_1 and v_2, in general, follow expected trends but isotopic effects are small.