Constancy of energy partition in central heavy-ion reactions at intermediate energies

TL;DR

This study shows that during central heavy-ion collisions at intermediate energies, the maximum excitation energy absorbed by the nucleus remains a constant fraction of the available energy, supported by both simulations and experimental data.

Contribution

It demonstrates the constancy of energy partition in heavy-ion reactions across a range of energies using semiclassical simulations and experimental analysis.

Findings

Maximal excitation energy is a constant fraction of available energy.

Simulation results align with experimental data.

Energy partition constancy holds across different incident energies.

Abstract

Semiclassical transport simulation of nucleus-nucleus collisions for the range of incident energy from about the Fermi energy up to a few hundred MeV per nucleon evidences that the maximal excitation energy put into a nuclear system during the early compact stage of heavy-ion reaction is a constant fraction of the center-of-mass available energy of the system. Analysis of experimental data without presuming reaction mechanism dominating the collision process on the best corroborate the found constancy of energy partition in central heavy-ion reactions.