Nuclear multifragmentation time scale and fluctuations of the largest fragment size

Distributions of the largest fragment charge, Zmax, in multifragmentation reactions around the Fermi energy can be decomposed into a sum of a Gaussian and a Gumbel distribution, whereas at much higher or lower energies one or the other distribution is asymptotically dominant. We demonstrate the same...

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Bibliographic Details
Published in:Physical review letters 2013-04, Vol.110 (17), p.172701-172701, Article 172701
Main Authors: Gruyer, D, Frankland, J D, Botet, R, Płoszajczak, M, Bonnet, E, Chbihi, A, Ademard, G, Boisjoli, M, Borderie, B, Bougault, R, Guinet, D, Lautesse, P, Manduci, L, Le Neindre, N, Marini, P, Pawłowski, P, Rivet, M F, Rosato, E, Spadaccini, G, Vigilante, M, Wieleczko, J P
Format: Article
Language:English
Subjects:
Nuclear Experiment
Nuclear Theory
Physics
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Summary:Distributions of the largest fragment charge, Zmax, in multifragmentation reactions around the Fermi energy can be decomposed into a sum of a Gaussian and a Gumbel distribution, whereas at much higher or lower energies one or the other distribution is asymptotically dominant. We demonstrate the same generic behavior for the largest cluster size in critical aggregation models for small systems, in or out of equilibrium, around the critical point. By analogy with the time-dependent irreversible aggregation model, we infer that Zmax distributions are characteristic of the multifragmentation time scale, which is largely determined by the onset of radial expansion in this energy range.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.110.172701