Multifragmentation in Collisions of 4.4gev-Deuterons with Gold Target

TL;DR

This study investigates the multifragmentation process in 4.4 GeV deuteron-gold collisions by analyzing velocity correlations of fragments and modeling decay times, revealing rapid emission within 40 fm/c.

Contribution

It introduces a combined modeling approach using intranuclear cascade and statistical multifragmentation to determine fragment emission times in high-energy collisions.

Findings

Fragment emission time is less than 40 fm/c.

Correlation functions match model predictions with modified intranuclear cascade.

Provides insights into the dynamics of nuclear multifragmentation.

Abstract

The relative velocity correlation function of pairs of intermediate mass fragments has been studied for d+Au collitions at 4.4 GeV. Experimental correlation functions are compared to that obtained by multibody Coulomb trajectory calculations under the assumption of various decay timees of the fragmenting system. The combined approach with the empirically modified intranuclear cascade code followed by the statistical multifragmentation model was used to generate the starting conditions for these calculations. The fragment emossion time is found to be less than 40 fm/c.