Sequential Decay Distortion of Goldhaber Model Widths for Spectator Fragments

Abstract

Momentum widths of the primary fragments and observed final fragments have been investigated within the framework of an Antisymmetrized Molecular Dynamics transport model code (AMD-V) with a sequential decay afterburner (GEMINI). It is found that the secondary evaporation effects cause the values of a reduced momentum width, ${\sigma }_0$, derived from momentum widths of the final fragments to be significantly less than those appropriate to the primary fragment but close to those observed in many experiments. Therefore, a new interpretation for experiemental momentum widths of projectile-like fragments is presented.

arXiv comment4 pages, 3 figs. Accepted for publication in Phys. Rev. C as a Rapid Communication

References in corpus (5)

• Universality of Spectator Fragmentation at Relativistic Bombarding Energies
• The multifragmentation of spectator matter
• Temperatures of Fragment Kinetic Energy Spectra
• Projectile fragmentation of 129Xe at Elab=790 AMeV
• Improvement of the nucleon emission process and the statistical property in molecular dynamics

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• Statistical nature of cluster emission in nuclear liquid-vapour phase coexistence
• Performance study of the Highly Granular Neutron Detector prototype in the BM@N experiment
• Activation of momentum fluctuations in wave packet molecular dynamics: Impacts on momentum distributions of projectilelike fragments
• Influence of Cluster Configurations and Nucleon--Nucleon Scattering Cross-Section on Stopping Power in Heavy-Ion Collisions