New Scalings in Nuclear Fragmentation

作者：Bonnet E^*; Borderie B; Le Neindre N; Raduta Ad R; Rivet M F; Bougault R; Chbihi A; Frankland J D; Galichet E; Gagnon Moisan F; Guinet D; Lautesse P; Lukasik J; Marini P; Parlog M; Rosato E; Roy R; Spadaccini G; Vigilante M; Wieleczko J P; Zwieglinski B

来源：Physical Review Letters, 2010, 105(14): 142701.

DOI：10.1103/PhysRevLett.105.142701

Fragment partitions of fragmenting hot nuclei produced in central and semiperipheral collisions have been compared in the excitation energy region 4-10 MeV per nucleon where radial collective expansion takes place. It is shown that, for a given total excitation energy per nucleon, the amount of radial collective energy fixes the mean fragment multiplicity. It is also shown that, at a given total excitation energy per nucleon, the different properties of fragment partitions are completely determined by the reduced fragment multiplicity (i.e., normalized to the source size). Freeze-out volumes seem to play a role in the scalings observed.

• 出版日期2010-9-30
• 单位中国地震局