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Theoretical Study of Ultra-Relativistic Heavy-Ion Collisions at RHIC and Isospin Physics with Radioactive Beams

RHIC 超相对论重离子碰撞和放射性束同位旋物理的理论研究

基本信息

批准号：
0088934
负责人：
Bao-An Li
金额：
$ 9.7万
依托单位：
Arkansas State University Main Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2000
资助国家：
美国
起止时间：
2000-08-15 至 2005-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0088934&HistoricalAwards=false
关键词：
Theoretical Study Ultra Relativistic Heavy

项目摘要

0088934LI Research in two areas of nuclear theory will be carried out to studyproperties of nuclear matter at extremely high temperatures, densities and neutron to proton ratios. The first area concerns the study of a new form of strongly interacting matter, the Quark-Gluon-Plasma (QGP). Knowledge about this matter is crucial for our understanding about the evolution of the early universe and the mechanism of supernova explosions. Collisions between two heavy nuclei at ultra-relativistic energies are predicted to produce in the laboratory the QGP. Dedicated experiments searching for evidence of the QGP formation will soon be carried out at the Brookhaven National Laboratory's Relativistic Heavy-Ion Collider (RHIC). I shall further develop a multi-phase transport model for ultra-relativistic heavy-ion collisions. The model will be useful for interpreting experimental data from RHIC, testing signatures of the QGP formation, and extracting properties of the QGP. The second area of my research concerns the study of neutron-rich matter by using nuclear reactions induced by radioactive beams having large neutron to proton ratios. I shall investigate several novel properties of the neutron-rich matter. In particular, the isospin-dependence of the nuclear equation of state (IEOS). Knowledge about the IEOS is relevant to type II supernova explosions, to neutron star mergers, to the cooling rate of protoneutron stars, and to the stability of neutron stars. Results of my research in this area can also be tested at several available radioactive beam facilities and the proposed Rare Isotope Accelerator (RIA).

0088934LI将开展核理论两个领域的研究，以研究核物质在极高温度、密度和中子质子比下的性质。第一个领域涉及一种强相互作用物质的新形式——夸克-胶子-等离子体（QGP）。关于这个问题的知识对于我们理解早期宇宙的演化和超新星爆炸的机制是至关重要的。在超相对论能量下，两个重核之间的碰撞预计会在实验室中产生QGP。寻找QGP形成证据的专门实验将很快在布鲁克海文国家实验室的相对论重离子对撞机（RHIC）上进行。我将进一步发展超相对论重离子碰撞的多相输运模型。该模型将有助于解释RHIC的实验数据，测试QGP地层的特征，以及提取QGP的性质。我研究的第二个领域涉及通过使用由具有大中子质子比的放射性光束诱导的核反应来研究富含中子的物质。我将研究富中子物质的几个新特性。特别是核状态方程（IEOS）的同位旋依赖性。关于IEOS的知识与II型超新星爆炸、中子星合并、质子中子星的冷却速率以及中子星的稳定性有关。我在这一领域的研究结果也可以在几个可用的放射性束流设施和拟议的稀有同位素加速器（RIA）上进行测试。