The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of Sn-124 and radioactive beams of La-124 and Sn-107 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 approximate to 0.6 MeV) appear for residue production near the onset of multifragmentation.

Isotopic dependence of the nuclear caloric curve / C. Sfienti, P. Adrich, T. Aumann, C. O. Bacri, T. Barczyc, R. Bassini, S. Bianchin, C. Boiano, A. S. Botvina, A. Boudard, J. Brzychczyk, A. Chbihi, J. Cibor, B. Czech, M. De Napoli, J. E. Ducret, H. Emling, J. D. Frankland, M Hellstroem, D. Henzlova, G. Imme, I. Iori, H. Johansson, K. Kezzar, A. Lafriakh, A. Le Fevre, E. Le Gentil, Y. Leifels, J. Luehning, J. Lukasik, W. G. Lynch, U. Lynen, Z. Majka, M. Mocko, W. F. J. Mueller, A. Mykulyak, H. Orth, A. N. Otte, R. Palit, P. Pawlowsky, A. Pullia, G. Raciti, E. Rapisarda, H. Sann, C. Schwarz, H. Simon, K. Suemmerer, W. Trautmann, M. B. Tsang, G. Verde, C. Volant, M. Wallace, H. Weick, J. Wiechula, A. Wieloch, B. Zwieglinski. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 102:15(2009 Apr 17), pp. 152701.152701.1-152701.152701.4. [10.1103/PhysRevLett.102.152701]

Isotopic dependence of the nuclear caloric curve

A. Pullia;
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 Sn-124 and radioactive beams of La-124 and Sn-107 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 approximate to 0.6 MeV) appear for residue production near the onset of multifragmentation.
GAS PHASE-TRANSITION ; HOT NUCLEI ; COULOMB INSTABILITY ; TEMPERATURE ; FRAGMENTATION ; COLLISIONS
Settore FIS/04 - Fisica Nucleare e Subnucleare
Settore FIS/01 - Fisica Sperimentale
Settore ING-INF/01 - Elettronica
17-apr-2009
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/152352
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