Isotopic Observables of the Nuclear Equation-of-State

核状态方程将通过使用同位素和介子观测来研究。日本放射性离子束工厂已经批准了一项研究高能重离子碰撞中同位旋扩散的实验。这个实验将利用跨越宽不对称的高能重离子纯束。同位素生产将用于更精确地测量高于正常核饱和能量的核对称能。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约束核物质中的核子有效质量。这些结果对于约束输运理论的模型依赖性具有极其重要的意义。未来的测量将集中在重离子碰撞中的核子相关函数和作为超饱和密度下对称能的观测的介子产生上。该项目将雇用本科生，为他们在核物理领域的职业生涯做好准备。在过去的项目期间，每3名本科生中就有2名进入研究生院（明年计划将每2名本科生中有2名进入研究生院），在培养本科生方面有着良好的记录。除了培训学生外，该项目还将解决探测器技术、数据采集和高速电子技术方面的几个技术问题。

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.