Probing nuclear bubble configuration by the π-/π+ ratio in heavy-ion collisions

被引：0
作者：
Yong, Gao-Chan [1 ]
机构：
[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL A | 2016年 / 52卷 / 05期
基金：
中国国家自然科学基金;
关键词：
ENERGY; SUPERHEAVY;
D O I：
10.1140/epja/i2016-16118-x
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：
It is theoretically and experimentally argued that there may exist bubble or toroid-shaped configurations in some nucleus systems. Based on the isospin-dependent transport model of nucleus-nucleus collisions, here we propose a method to probe the bubble configuration in the nucleus. That is, one could use the value of the pi(-)/pi(+) ratio especially its kinetic energy distribution in head-on collision at intermediate energies to probe whether there is bubble configuration or not in projectile and target nuclei. Due to different maximum compressions and the effect of symmetry energy, the value of the pi(-)/pi(+) ratio in the collision of bubble nuclei is evidently larger than that in the collision of normal nuclei.
引用
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页码：1 / 5
页数：5
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