title: Nuclear multifragmentation time scale and fluctuations of the largest fragment size.
abstract: 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.
authors.affiliation: GANIL, CEA-DSM/CNRS-IN2P3, Boulevard Henri Becquerel, F-14076 Caen Cedex, France.
authors.forename: D
authors.initials: D
authors.lastname: Gruyer
authors.forename: J D
authors.initials: JD
authors.lastname: Frankland
authors.forename: R
authors.initials: R
authors.lastname: Botet
authors.forename: M
authors.initials: M
authors.lastname: Płoszajczak
authors.forename: E
authors.initials: E
authors.lastname: Bonnet
authors.forename: A
authors.initials: A
authors.lastname: Chbihi
authors.forename: G
authors.initials: G
authors.lastname: Ademard
authors.forename: M
authors.initials: M
authors.lastname: Boisjoli
authors.forename: B
authors.initials: B
authors.lastname: Borderie
authors.forename: R
authors.initials: R
authors.lastname: Bougault
authors.forename: D
authors.initials: D
authors.lastname: Guinet
authors.forename: P
authors.initials: P
authors.lastname: Lautesse
authors.forename: L
authors.initials: L
authors.lastname: Manduci
authors.forename: N
authors.initials: N
authors.lastname: Le Neindre
authors.forename: P
authors.initials: P
authors.lastname: Marini
authors.forename: P
authors.initials: P
authors.lastname: Pawłowski
authors.forename: M F
authors.initials: MF
authors.lastname: Rivet
authors.forename: E
authors.initials: E
authors.lastname: Rosato
authors.forename: G
authors.initials: G
authors.lastname: Spadaccini
authors.forename: M
authors.initials: M
authors.lastname: Vigilante
authors.forename: J P
authors.initials: JP
authors.lastname: Wieleczko