RUI: Probing the Equation of State of Dense Neutron-Rich Matter with High Energy Radioactive Beams at Rare Isotope Accelerator (RIA)

RUI：在稀有同位素加速器 (RIA) 上用高能放射性束探测致密富中子物质的状态方程

• 批准号: 0354572
• 负责人: Bao-An Li
• 金额: $ 4.67万
• 依托单位: Arkansas State University Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0354572&HistoricalAwards=false
• 关键词: RUI; Probing; Equation; State; Dense

This proposal is to investigate several critical issues concerning the equation of state (EOS) of dense neutron-rich matter relevant to the reactions expected with the high energy radioactive beams at the planned Rare Isotope Accelerator (RIA). The ultimate goal is to determine accurately the isospin dependence of the nuclear EOS. The latter is among the most important topics identified in the latest long-range plan for U.S. nuclear physics. It is also a foundamental property that governs many aspects of neutron stars and the explosion mechanisms of supernove. Among the important theoretical issues to be addressed in the proposed work are: Momentum-dependence of the symmetry potential and its effects on nuclear reactions induced by neutron-rich nuclei at RIA; Effective masses of neutrons and protons and their scattering cross sections in dense neutron-rich matter; Incompressibility of dense neutron-rich matter; Isospin-separation and chemical instabilities of neutron-rich matter; Charge-symmetry-breaking (CSB) and rho-omega meson mixing in dense neutron- rich matter. In addition, it is also proposed to develop a transport theory with Bose-Einstein statistics for relativistic heavy-ion collisions. Several undergraduate students will fully participate directly in the proposed research. Their involvement in research provides a broad and solid basis for their choice of where to take their career beyond the undergraduate degree. The funding of this proposal will thus allow the PI to better prepare students in a research non-intensive institution to become next generation scientists and engineers. Funding of this proposal will also further improve the environment and infrastructure for research in nuclear physics at Arkansas State University in particular and the State of Arkansas in general.

本文的目的是研究在计划中的稀土同位素加速器（RIA）上与高能放射性束流预期反应有关的致密富中子物质的态方程（EOS）的几个关键问题。最终的目标是准确地确定核子的同位旋依赖。后者是美国核物理学最新长期计划中确定的最重要主题之一。它也是控制中子星许多方面和超新星爆炸机制的基本性质。在提出的工作中需要解决的重要理论问题包括：对称势的动量依赖性及其对RIA中富中子核诱导的核反应的影响；稠密富中子物质中中子和质子的有效质量及其散射截面；致密富中子物质的不可压缩性；富中子物质的同位旋分离与化学不稳定性稠密富中子物质中的电荷对称破缺（CSB）和介子混合。此外，还提出了用玻色-爱因斯坦统计发展相对论重离子碰撞的输运理论。几名本科生将完全直接参与拟议的研究。他们参与研究为他们选择本科学位以外的职业提供了广泛而坚实的基础。这项提案的资助将使PI能够更好地为非研究型机构的学生做好成为下一代科学家和工程师的准备。这项提案的资金还将进一步改善阿肯色州立大学特别是阿肯色州核物理学研究的环境和基础设施。