Yield scaling, size hierarchy and fluctuations of observables in fragmentation of excited heavy nuclei
N. Le Neindre, E. Bonnet, J. P. Wieleczko, B. Borderie, F. Gulminelli, M. F. Rivet, R. Bougault, A. Chbihi, R. Dayras, J. D. Frankland, E. Galichet, D. Guinet, … 展开作者
N. Le Neindre, E. Bonnet, J. P. Wieleczko, B. Borderie, F. Gulminelli, M. F. Rivet, R. Bougault, A. Chbihi, R. Dayras, J. D. Frankland, E. Galichet, D. Guinet, P. Lautesse, O. Lopez, J. Lukasik, D. Mercier, J. Moisan, M. Parlog, E. Rosato, R. Roy, C. Schwarz, C. Sfienti, B. Tamain, W. Trautmann, A. Trzcinski, K. Turzo, E. Vient, M. Vigilante, B. Zwieglinski
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30 pages, accepted for publication in Nuclear Physics A, references corrected
本文研究了入射能量为32-50 A MeV的Sn +Sn反应产生的单源和80 A MeV的Au+Au碰撞产生的准粒子的多重碎裂性质。这两种类型的源的比较有关Fisher标度,Zipf定律,碎片大小和波动观测。所有数据均观察到Fisher标度。从Fisher标度中提取的赝临界能量在Au +Sn中心碰撞和Au准抛射体之间是一致的。在后一种情况下,它也对应于波动最大的能量区域。由Zipf分析得到的临界能高于Fisher分析得到的临界能。
英文摘要:
Multifragmentation properties measured with INDRA are studied for single sources produced in Xe+Sn reactions in the incident energy range 32-50 A MeV and quasiprojectiles from Au+Au collisions at 80 A MeV. A comparison for both types of sources is presented concerning Fisher scaling, Zipf law, fragment size and fluctuation observables. A Fisher scaling is observed for all the data. The pseudo-critical energies extracted from the Fisher scaling are consistent between Xe+Sn central collisions and Au quasi-projectiles. In the latter case it also corresponds to the energy region at which fluctuations are maximal. The critical energies deduced from the Zipf analysis are higher than those from the Fisher analysis.
Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer
Fragmentation of Nuclear Remnants in Electron-Nucleus Collisions at High Energy as a Nonextensive Process
Shanxi University(山西大学);Beijing Vocational College of Agriculture(北京农业职业学院);Physical-Technical Institute of Uzbekistan Academy of Sciences(乌兹别克斯坦科学院物理技术研究所);National University of Science and Technology MISIS (NUST MISIS)(俄罗斯国立科技大学MISIS)