Abstract
The dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of and radioactive beams of and at 600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemical freeze-out temperatures are found to be nearly invariant with respect to the of the produced spectator sources, consistent with predictions for expanded systems. Small Coulomb effects () appear for residue production near the onset of multifragmentation.
- Received 26 August 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.152701
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