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Isotopic Dependence of the Nuclear Caloric Curve

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 124Sn and radioactive beams of 124La and 107Sn 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 (\Delta T \approx 0.6 MeV) appear for residue production near the onset of multifragmentation.
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Contributor : Michel Lion <>
Submitted on : Wednesday, March 11, 2009 - 9:32:38 AM
Last modification on : Monday, December 14, 2020 - 9:28:02 AM

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C. Sfienti, P. Adrich, T. Aumann, C. O. Bacri, T. Barczyk, et al.. Isotopic Dependence of the Nuclear Caloric Curve. Physical Review Letters, American Physical Society, 2009, 102, pp.152701. ⟨10.1103/PhysRevLett.102.152701⟩. ⟨in2p3-00367337⟩



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