Effects of P-tot gates and velocity gates on light-particle momentum correlation in intermediate-energy heavy-ion collisions
文献类型：期刊论文
| 作者 | Wang, TT; Ma, YG; Zhang, ZQ |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2019 |
| 卷号 | 99期号:5页码:— |
| ISSN号 | 2469-9985 |
| 关键词 | SMALL RELATIVE MOMENTA 2-PARTICLE CORRELATIONS NUCLEAR-EQUATION PION INTERFEROMETRY BINDING-ENERGY PROTON EMISSION NEUTRON AU-197 STATE |
| DOI | 10.1103/PhysRevC.99.054626 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Momentum correlation functions at small relative momenta are calculated for light particles (n, p, d, t) emitted from Au-197 + Au-197 collisions at different impact parameters and beam energies within the framework of the isospin-dependent quantum molecular dynamics model complemented by the analytical method of Lednicky and Lyuboshitz. We first make sure our model is able to reproduce the FOPI detector data of proton-proton momentum correlation in a wide energy range from 0.4A to 1.5A GeV. Then we explore more physics insights through the emission times and momentum correlations among different light particles. The specific emphasis is on the effects of total pair momentum among different light particles, impact parameters, and in-medium nucleon-nucleon cross sections. Both two-deuteron and two-triton correlation functions are anticorrelated due to the final state interaction, and they are affected by the in-medium nucleon-nucleon cross section for higher total momentum of the particle pairs, but not for lower momentum. In addition, impact parameter and in-medium nucleon-nucleon cross section dependences of the emission source radii are extracted by fitting the momentum correlation functions. The results indicate that momentum correlation function gating with total pair momentum is stronger for smaller in-medium nucleon-nucleon cross section factor (eta) or impact parameter (b). Nonidentical particle correlations (np, pd, pt, and dt) are also investigated by velocity-gated correlation functions, which can give information on the particles' emission sequence, and the result indicates that heavier ones (deuteron and triton) are, on average, emitted earlier than protons, in the small relative momentum region. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31580]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, TT,Ma, YG,Zhang, ZQ. Effects of P-tot gates and velocity gates on light-particle momentum correlation in intermediate-energy heavy-ion collisions[J]. PHYSICAL REVIEW C,2019,99(5):—. |
| APA | Wang, TT,Ma, YG,&Zhang, ZQ.(2019).Effects of P-tot gates and velocity gates on light-particle momentum correlation in intermediate-energy heavy-ion collisions.PHYSICAL REVIEW C,99(5),—. |
| MLA | Wang, TT,et al."Effects of P-tot gates and velocity gates on light-particle momentum correlation in intermediate-energy heavy-ion collisions".PHYSICAL REVIEW C 99.5(2019):—. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。