Spin transport in intermediate-energy heavy-ion collisions as a probe of in-medium spin-orbit interactions

被引：11

作者：

Xia, Yin ^{[1
,2
]}

Xu, Jun ^{[1
]}

Li, Bao-An ^{[3
,4
]}

Shen, Wen-Qing ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Texas A&M Univ, Dept Phys & Astron, Commerce, TX 75429 USA

[4] Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Peoples R China

来源：

NUCLEAR PHYSICS A | 2016年 / 955卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Heavy-ion collisions; Collective flows; Spin-orbit coupling; Polarization; ISOSPIN DEPENDENCE; STATISTICAL MULTIFRAGMENTATION; COLLECTIVE FLOW; NUCLEI; DYNAMICS; FORCE; MODEL; EMISSION; EQUATION; PHYSICS;

D O I：

10.1016/j.nuclphysa.2016.06.001

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 spin up-down splitting of collective flows in intermediate-energy heavy-ion collisions as a result of the nuclear spin-orbit interaction is investigated within a spin- and isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model SIBUU12. Using a Skyrme-type spin-orbit coupling quadratic in momentum, we found that the spin splittings of the directed flow and elliptic flow are largest in peripheral Au+Au collisions at beam energies of about 100-200 MeV/nucleon, and the effect is considerable even in smaller systems especially for nucleons with high transverse momenta. The collective flows of light clusters of different spin states are also investigated using an improved dynamical coalescence model with spin. Our study can be important in understanding the properties of in-medium nuclear spin-orbit interactions once the spin-dependent observables proposed in this work can be measured. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：41 / 57

页数：17

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