Isotopic Observables of the Nuclear Equation-of-State

核状态方程的同位素可观测量

• 批准号: 1064280
• 负责人: Michael Famiano
• 金额: $ 4万
• 依托单位: Western Michigan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1064280&HistoricalAwards=false
• 关键词: Isotopic; Observables; Nuclear; Equation; State

The nuclear equation of state will be studied via the use of isotopic and meson observables. One experiment has been approved at the Radioactive Ion Beam Factory in Japan to study isospin diffusion in high-energy heavy ion collisions. This experiment will make use of pure beams of high energy heavy ions spanning a wide asymmetry. Isotopic production will be used to more precisely gauge the nuclear symmetry energy at energies above normal nuclear saturation.In addition, recent data acquired in measurements at the National Superconducting Cyclotron Laboratory will be used to constrain the nucleon effective masses in nuclear matter. These results are extremely important in constraining the model dependence of transport theories.Future measurements will concentrate on nucleon correlation functions in heavy ion collisions and on pion production as an observable of the symmetry energy at supra-saturation densities.The project will employ undergraduate students in order to prepare them for careers in nuclear physics. The PI has a strong record of undergraduate student training, having sent two out of three undergraduate students to graduate school during the past project period (and is planning to send two out of two to graduate school in the next year). In addition to student training, the project will solve several technical issues in detector technology, data acquisition, and high-speed electronics.

核状态方程将通过使用同位素和介子观测量进行研究。 日本放射性离子束工厂已批准进行一项实验，研究高能重离子碰撞中的同位旋扩散。 这项实验将利用跨越广泛不对称性的高能重离子纯束。 同位素生产将用于更精确地测量能量高于正常核饱和时的核对称能，此外，国家超导回旋加速器实验室最近获得的测量数据将用于限制核物质中的核子有效质量。 这些结果在限制输运理论的模型依赖性方面是极其重要的。未来的测量将集中在重离子碰撞中的核子关联函数和作为超饱和密度下对称能的可观测值的π介子产生上。该项目将雇用本科生，以便为他们在核物理领域的职业生涯做好准备。 PI在本科生培养方面有着良好的记录，在过去的项目期间，三分之二的本科生被送往研究生院（并计划在明年将两分之二的本科生送往研究生院）。 除了学生培训外，该项目还将解决探测器技术、数据采集和高速电子学方面的几个技术问题。