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Isotopic Dependence of the Nuclear Caloric Curve

C. Sfienti et al. (ALADIN2000 Collaboration)
Phys. Rev. Lett. 102, 152701 – Published 13 April 2009

Abstract

The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of Sn124 and radioactive beams of La124 and Sn107 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 A/Z of the produced spectator sources, consistent with predictions for expanded systems. Small Coulomb effects (ΔT0.6MeV) appear for residue production near the onset of multifragmentation.

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  • Received 26 August 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.152701

©2009 American Physical Society

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Vol. 102, Iss. 15 — 17 April 2009

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