STATISTICAL AND DYNAMICAL ASPECTS IN THE DECAY OF HOT NEUTRON-RICH NUCLEI

被引：0
|
作者：
Veselsky, M. [1 ]
Souliotis, G. A. [2 ]
Keksis, A. L. [3 ]
Shetty, D. V. [3 ]
Jandel, M. [3 ]
Yennello, S. J. [3 ]
Wang, K. [4 ]
Ma, Y. G. [4 ]
机构：
[1] Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia
[2] Univ Athens, Dept Chem, Phys Chem Lab, Athens 11528, Greece
[3] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA
[4] Shanghai Inst Appl Phys, Shanghai, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS | 2010年 / 19卷 / 8-9期
关键词：
FERMI-ENERGY DOMAIN; MULTIFRAGMENTATION; COLLISIONS; DEPENDENCE; EMISSION; MATTER;
D O I：
10.1142/S0218301310015965
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A signal of isospin-asymmetric phase transition in the evolution of chemical potential is observed in hot quasi-projectiles produced in the reactions Ca-40,Ca-48 + Al-27 confirming an analogous observation in the lighter quasi-projectiles observed in the reaction Si-28 + Sn-112,Sn-124.(1) With increasing mass, the properties of hot quasi-projectiles become increasingly influenced by secondary emission. Thermodynamical observables exhibit no sensitivity to a different number of missing neutrons in the two reactions Ca-40,Ca-48 + Al-27 and provide a signal of dynamical emission of neutrons, which can be related to a very neutron-rich low-density region (neck) between the projectile and target.
引用
收藏
页码：1559 / 1569
页数：11
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