A new "3D Calorimetry" of hot nuclei

TL;DR

This paper introduces a novel 3D calorimetry method for more accurate characterization of hot nuclei in heavy ion collisions, addressing distortions from other reaction participants.

Contribution

It presents a new calorimetry technique that improves the accuracy of hot nucleus measurements by accounting for reaction distortions, surpassing traditional methods.

Findings

The new method significantly enhances the precision of hot Quasi-Projectile characterization.

It quantitatively demonstrates improvements over classic calorimetry techniques.

The study analyzes the impact of experimental setup and event selection on measurement quality.

Abstract

In the domain of Fermi energy, it is extremely complex to isolate experimentally fragments and particles issued from the cooling of a hot nucleus produced during a heavy ion collision. This paper presents a new method to characterize more precisely hot Quasi-Projectiles. It tries to take into account as accurately as possible the distortions generated by all the other potential participants in the nuclear reaction. It is quantitatively shown that this method is a major improvement respect to classic calorimetries used with a 4$\pi$ detector array. By detailing and deconvolving the different steps of the reconstitution of the hot nucleus, this study shows also the respective role played by the experimental device and the event selection criteria on the quality of the determination of QP characteristics.