arxiv: 1003.2800 · v1 · submitted 2010-03-14 · ⚛️ nucl-ex · nucl-th

Tracing a phase transition with fluctuations of the largest fragment size: Statistical multifragmentation models and the ALADIN S254 data

T. Pietrzak , P. Adrich , T. Aumann , C. O. Bacri , T. Barczyk , R. Bassini , S. Bianchin , C. Boiano

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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. Hellstrom D. Henzlova G. Imme I. Iori H. Johansson K. Kezzar A. Lafriakh A. Le Fevre E. Le Gentil Y. Leifels J. Luhning J. Lukasik W. G. Lynch U. Lynen Z. Majka M. Mocko W. F. J. Muller A. Mykulyak H. Orth A. N. Otte R. Palit P. Pawlowski A. Pullia G. Raciti E. Rapisarda H. Sann C. Schwarz C. Sfienti H. Simon K. Summerer W. Trautmann M. B. Tsang G. Verde C. Volant M. Wallace H. Weick J. Wiechula A. Wieloch B. Zwieglinski

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keywords transitionaladindatafragmentlargestmodelsmultifragmentationphase

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A phase transition signature associated with cumulants of the largest fragment size distribution has been identified in statistical multifragmentation models and examined in analysis of the ALADIN S254 data on fragmentation of neutron-poor and neutron-rich projectiles. Characteristics of the transition point indicated by this signature are weakly dependent on the A/Z ratio of the fragmenting spectator source. In particular, chemical freeze-out temperatures are estimated within the range 5.9 to 6.5 MeV. The experimental results are well reproduced by the SMM model.

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Tracing a phase transition with fluctuations of the largest fragment size: Statistical multifragmentation models and the ALADIN S254 data

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