Symmetry Energy Effects in a Statistical Multifragmentation Model

Symmetry Energy Effects in a Statistical Multifragmentation Model
复制标题

统计多碎片模型中的对称能量效应

DOI:
10.1088/0256-307x/28/11/112102
复制
发表时间:
2011-10
期刊:
Chin. Phys. Lett.
影响因子:
--
通讯作者:
GUO WJ
GUO WJ
中科院分区:
其他
文献类型:
--
作者:
Gao Y;ZHANG HF;ZHANG L;CHEN XM;LI JQ;GUO WJ

文献摘要

参考文献

相似文献

在其微正则系综内的统计多碎裂模型(SMM)框架内研究了富中子系统(A0 = 200,Z0 = 78)的核衰变机制的对称能量效应。采用考虑体积和表面不对称性的修正对称能量项代替标准SMM模型中的原始不变值。结果表明,考虑到体积和表面的不对称性,富中子体系在较低的激发能下比原始标准SMM模型更早地从蒸发转化为类裂变过程,并且其质量分布在中重核范围内的概率更大,从而使体系的破裂更加平均。当激发能变高时,体积和表面不对称性导致平均多重数变小。
The symmetry energy effects on the nuclear disintegration mechanisms of the neutron-rich system (A0 = 200, Z0 = 78) are studied in the framework of the statistical multifragmentation model (SMM) within its micro-canonical ensemble. A modified symmetry energy term with consideration of the volume and surface asymmetry is adopted instead of the original invariable value in the standard SMM model. The results indicate that as the volume and surface asymmetries are considered, the neutron-rich system translates to a fission-like process from evaporation earlier than the original standard SMM model at lower excitation energies, and its mass distribution has larger probabilities in the medium-heavy nuclei range so that the system breaks up more averagely. When the excitation energy becomes higher, the volume and surface asymmetry lead to a smaller average multiplicity.
DOI: 10.1103/physrevc.75.024605
发表时间: 2006-09
期刊: Physical Review C
影响因子: 3.1
作者:
A. Raduta;F. Gulminelli
通讯作者: A. Raduta;F. Gulminelli
DOI: 10.1103/physrevc.58.27
发表时间: 1998-05
期刊: Physical Review C
影响因子: 3.1
作者:
J. Bondorf;A. Botvina;I. Mishustin
通讯作者: J. Bondorf;A. Botvina;I. Mishustin
DOI: 10.1103/physrevlett.49.1321
发表时间: 1982-11
影响因子: 8.6
作者:
J. E. Finn;S. Agarwal;A. Bujak;J. Chuang;L. Gutay;A. Hirsch;R. Minich;N. Porile;R. Scharenberg-R.-Sc
通讯作者: J. E. Finn;S. Agarwal;A. Bujak;J. Chuang;L. Gutay;A. Hirsch;R. Minich;N. Porile;R. Scharenberg-R.-Sc
DOI: 10.1016/j.physrep.2008.04.005
发表时间: 2008-04
期刊: arXiv: Nuclear Theory
影响因子: --
作者:
Bao-An Li;Lie-Wen Chen;C. Ko
通讯作者: Bao-An Li;Lie-Wen Chen;C. Ko
DOI: 10.1103/physrevc.51.1384
发表时间: 1995-01
期刊: Physical review. C, Nuclear physics
影响因子: --
作者:
Jicai Pan;Subal Das Gupta
通讯作者: Jicai Pan;Subal Das Gupta