Studies of Nuclear Reactions and Stucture

该奖项支持佛罗里达州立大学的实验核物理小组和约翰·D·福克斯超导加速器实验室的运营，以及国家用户实验室的其他工作。这些实验包括对核反应和衰变的研究，这些反应和衰变在恒星过程的所有阶段都起着关键作用。其他实验的重点是了解化学元素从哪里来，以及它们是如何进化和排列成核壳结构的。该小组还将利用相对论重离子对撞机(RHIC)的重离子碰撞来研究可见物质是如何形成的，以及它是如何从夸克-胶子等离子体演化而来的。该计划的大部分内容都是为了解决2015年核科学远景计划中概述的基本问题。该项目更广泛的社会影响在于在实践环境中对本科生和研究生进行教育和培训。由于学生在前沿核物理实验室接受培训并使用高科技设备进行实践工作，FSU毕业生需求旺盛，目前在国土安全、国防、高科技产业、前沿研究和STEM教育中担任关键角色。该组织还积极支持和加强当地学校系统。约翰·D·福克斯加速器实验室专注于通过粒子和伽马射线光谱学以及利用RESOLUT设施在飞行中产生的放射性束流进行核天体物理方面的计划。此外，在FSU加速器上新安装的Super-Enge分裂极光谱仪(SE-SPS)正在重新建立全国唯一的轻离子和重离子反应高分辨率光谱学资源。该小组将有一个新的研究重点，即未束缚态的核物理和轻核中的超辐射机制。另一项新举措是开发一种新型多样品电离室(FSU-MUSIC)有源目标探测器，用于测量奇异核和低能量核之间的聚变截面。探测器将与位置分辨硅探测器相结合，以便可以同时测量弹性和非弹性散射、转移反应和聚变，以努力揭示在低能量下对聚变机制的各种贡献。最后，ANASEN主动目标探测器是FSU天体物理兴趣反应的领先探测器系统，最近在NSCL的再加速束流设备REA-3上也进行了两项实验。这是一个例子，说明了地方实验室新的探测器技术和方法的发展如何在国家设施中创造了科学机会，也是实验室在FRIB时代未来作用的典范。

This award supports the experimental nuclear physics group at Florida State University and the operation of the John D. Fox Superconducting Accelerator Laboratory, as well as other work at national user laboratories. The experiments include studies of nuclear reactions and decays that play key roles in all stages of stellar processes. Other experiments focus on understanding where the chemical elements come from and how they evolved and ordered themselves into nuclear shell structures. The group will also exploit heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) to investigate how visible matter came into being and how it evolved from a quark-gluon plasma. Much of this program is aligned to address fundamental questions outlined in the 2015 Long Range Plan for Nuclear Science. The broader societal impacts of this project lie in the education and training of undergraduate and graduate students in a hands-on environment. Because of the students' training and hands-on work with high tech equipment in a forefront nuclear physics laboratory, FSU graduates are in high demand and now serve in key roles in homeland security, national defense, high-tech industry, leading edge research, and STEM education. The group also is active in supporting and strengthening local school systems. The John D. Fox accelerator laboratory focuses on programs in nuclear structure physics through particle and gamma-ray spectroscopy and nuclear astrophysics with radioactive beams produced in flight by the RESOLUT facility. In addition, the newly installed Super-Enge Split-Pole Spectrograph (SE-SPS) at the FSU accelerator is re-establishing a nationally unique resource for high-resolution spectroscopy of light- and heavy-ion reactions. The group will have a new research focus on the nuclear physics of unbound states and the super-radiance mechanism in light nuclei. Another new initiative is the development of a novel Multi-Sample Ion Chamber (FSU-MUSIC) active-target detector, to be used in the measurement of fusion cross-sections between exotic nuclei and at low energy. The detector will be combined with position-resolving silicon-detectors such that elastic and inelastic scattering, transfer-reactions and fusion can be measured simultaneously, in an effort to unravel the various contributions to the fusion mechanism at low energies. Finally, the ANASEN active-target detector is a leading detector system for reactions of astrophysical interest at FSU and also in two recent experiments at the re-accelerated beam facility REA-3 of the NSCL. This is an example of how the development of a new detector technology and methods at the local laboratory creates scientific opportunity at national facilities and is a model for the future role of the laboratory in the era of FRIB.