Isotopic Effects in Nuclear Reactions at Relativistic Energies

TL;DR

This study investigates isotopic effects in nuclear reactions at relativistic energies, revealing subtle differences in neutron and charged particle production across various isotopic compositions, and compares breakup temperatures with theoretical limits.

Contribution

It provides new experimental data on isotopic effects in projectile fragmentation at relativistic energies using diverse isotopic beams.

Findings

Similar gross properties across different isotopic systems

Observed isotopic effects in neutron and charged particle yields

Breakup temperatures compared with limiting-temperature expectations

Abstract

A systematic study of isotopic effects in the break-up of projectile spectators at relativistic energies has been performed at the GSI laboratory with the ALADiN spectrometer coupled to the LAND neutron detector. Besides a primary beam of 124Sn, also secondary beams of 124La and 107Sn produced at the FRS fragment separator have been used in order to extend the range of isotopic compositions. The gross properties of projectile fragmentation are very similar for all the studied systems but specific isotopic effects have been observed in both neutron and charged particle production. The breakup temperatures obtained from the double ratios of isotopic yields have been extracted and compared with the limiting-temperature expectation.