A hybrid model for studying nuclear multifragmentation around Fermi energy domain: Case for central collision of Xe on Sn

TL;DR

This paper presents a hybrid modeling approach combining a transport model and a thermodynamic model to analyze nuclear multifragmentation in central Xe on Sn collisions at energies around 32-50 MeV/nucleon, showing good agreement with experimental data.

Contribution

The study introduces a hybrid model integrating BUU transport calculations with a thermodynamic model to accurately predict multifragmentation observables.

Findings

Model accurately reproduces multiplicities of nuclear fragments.

Probability distributions of the largest cluster match experimental data.

Validates the hybrid approach for nuclear multifragmentation analysis.

Abstract

Experimental data for central collisions of $^{129}$Xe on $^{119}$Sn at beam energies of (a) 32 MeV/nucleon, (b) 39 MeV/nucleon, (c) 45 MeV/nucleon and (d) 50 MeV/nucleon are compared with results calculated using a hybrid model. We use a transport model (BUU) to obtain the excitation energy per nucleon in the center of mass of the multifragmenting system. The canonical thermodynamic model is then used to determine the temperature which would lead to this excitation energy. With this temperature we use the canonical thermodynamic model to calculate various experimental data such as multiplicities of different composites, probability distribution of the largest cluster etc. Agreement with data establishes the validity of the model.