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20 April 2024

» arxiv » 0903.1772

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Isotopic Dependence of the Nuclear Caloric Curve
ALADIN2000 Collaboration ; C. Sfienti ; P. Adrich ; T. Aumann ; C.O. Bacri ; T. Barczyk ; 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. Pawlowski ; 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 ;
Date:	10 Mar 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 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.
Source:	arXiv, 0903.1772
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