MCNP6 Study of Fragmentation Products from 112Sn + 112Sn and 124Sn + 124Sn at 1 GeV/nucleon

TL;DR

This study evaluates the ability of the MCNP6 simulation code to reproduce isotope production cross sections from Sn+Sn collisions at 1 GeV/nucleon, comparing it with experimental data and other models.

Contribution

It demonstrates that MCNP6 reasonably reproduces measured cross sections and compares different models for multifragmentation in heavy-ion collisions.

Findings

MCNP6 reproduces measured isotope cross sections well.

Comparison with other models shows no clear evidence of multifragmentation signatures.

MCNP6 is a reliable tool for simulating heavy-ion collision products.

Abstract

Isotope production cross sections from 112Sn + 112Sn and 124Sn + 124Sn reactions at 1 GeV/nucleon, which were measured recently at GSI using the heavy-ion accelerator SIS18 and the Fragment Separator (FRS), have been analyzed with the latest Los Alamos Monte-Carlo transport code MCNP6 using the LAQGSM03.03 event generator. MCNP6 reproduces reasonably well all the measured cross sections. Comparison of the MCNP6 results with the measured data and with calculations by a modification of the Los Alamos version of the Quark-Gluon String Model allowing for multifragmentation processes in the framework of the Statistical Multifragmentation Model (SMM) by Botvina and coauthors, as realized in the code LAQGSM03.S1, does not suggest unambiguous evidence of a multifragmentation signature.