Nuclear matter phase diagram from compound nucleus decay

被引:0
作者
Moretto, L. G. [1 ]
Elliott, J. B. [2 ]
Lake, P. T. [1 ]
Phair, L. [1 ]
机构
[1] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源
CNR*11 - THIRD INTERNATIONAL WORKSHOP ON COMPOUND NUCLEAR REACTIONS AND RELATED TOPICS | 2012年 / 21卷
关键词
MULTIFRAGMENTATION; MODEL; REDUCIBILITY; TRANSITION; SIMULATION; CLUSTERS; DYNAMICS; BARRIERS; GOLD; HOT;
D O I
10.1051/epjconf/20122108009
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
The finite size of nuclei and the Coulomb interaction make it difficult to describe systems interacting through the strong force into thermodynamic terms. Our task is to extract the phase diagram of the theoretical infinite symmetrical uncharged nuclear matter from experiments of nuclear collisions where the systems are neither infinite, symmetrical, nor uncharged. Decay yields from such experiments are translated into coexistence densities and pressures by use of Fisher's droplet model. This method is tested on model systems such as the Ising model and a system of particles interacting via the Lennard-Jones potential. The specific problems inherent to nuclear reactions are considered. These include finite size effects, Coulomb repulsion, and the lack of a physical vapor in contact with a decaying system. Experimental data of compound nucleus experiments are studied within this framework, which is also shown to extend to higher energy reactions. Finally, the phase diagram of nuclear matter is extracted.
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页数:14
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