A "Little Big Bang" Scenario of Multifragmentation

TL;DR

This paper proposes a 'Little Big Bang' scenario where fragments form early in a hot, dense state, addressing issues in traditional low-density models and enabling thermodynamic parameter recovery from fragment data.

Contribution

It introduces a novel multifragmentation model based on early high-temperature, high-density conditions, improving understanding of fragment formation and properties.

Findings

Fragments originate from early high-density, high-temperature stages.

The model explains kinetic energies and temperatures of fragments.

Initial thermodynamic parameters can be inferred from fragment distributions.

Abstract

We suggest a multifragmentation scenario in which fragments are produced at an early, high temperature and high density, stage of the reaction. In this scenario, self-bound clusters of particles in the hot and dense fluid are the precursors of the observed fragments. This solves a number of recurrent problems concerning the kinetic energies and the temperature of the fragments, encountered with the standard low density fragmentation picture. The possibility to recover the initial thermodynamic parameters from the inspection of the asymptotic fragment size and kinetic energy distributions is discussed.