Heavy-ion Reactions at the Energy and Isospin Frontiers

能量和同位旋前沿的重离子反应

• 批准号: 0070818
• 负责人: Scott Pratt
• 金额: $ 72万
• 依托单位: Michigan State University
• 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: 2000-06-15 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070818&HistoricalAwards=false
• 关键词: Heavy; ion; Reactions; Energy; Isospin

0070818Pratt Two important experimental nuclear physics facilities are becoming operational in the next two years. The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory will collide heavy nuclei at extremely high energy. Within the reaction volume, conditions should exist to temporarily alter the structure of matter, liberating quarks from their usual confinement within hadrons andmelting the non-perturbative structure of the QCD vacuum. The second facility is the Coupled Cyclotron Project (CCP) at the National Superconducting Cyclotron Laboratory. The CCP upgrade will provide beams of nuclei with exceptionally high neutron-to-proton ratios, which can be used to perform experiments before the nuclei undergo beta decay to the usual isotopes. By colliding such nuclei and observing the outgoing nuclear fragments, we hope to infer information about the equation of state of neutron-rich matter and tobetter understand the process of nuclear fragmentation. The principal aim of our work is to provide theoretical interpretations of the measurements in these facilities. Since the questions regarding bulk-matter properties are addressed only indirectly through detailed analyses of such experiments, theory plays an especially integral role in the analyses of such experimental results.

[00:70818]两个重要的核物理实验设施将在未来两年内投入使用。布鲁克海文国家实验室的相对论重离子对撞机（RHIC）将以极高的能量碰撞重核。在反应体积内，应该存在暂时改变物质结构的条件，将夸克从它们通常在强子中的束缚中解放出来，并融化QCD真空的非微扰结构。第二个设施是国家超导回旋加速器实验室的耦合回旋加速器项目（CCP）。CCP的升级将提供具有极高中子质子比的原子核束，这可以用于在原子核经历β衰变到通常的同位素之前进行实验。我们希望通过对这些原子核的碰撞和观察出射的核碎片，推断出富中子物质的状态方程信息，更好地理解核碎片的过程。我们工作的主要目的是为这些设施的测量提供理论解释。由于对这类实验的详细分析只能间接地解决有关主体物质性质的问题，因此理论在分析这类实验结果中起着特别重要的作用。