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

页码：1559 / 1569

页数：11

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