Operation of the Nuclear Structure Laboratory (Physics)

该奖项将支持纽约州立大学石溪分校核结构实验室的重离子核物理研究项目，该项目将使用超导助推器加速器和FN型串联加速器。再加上石溪小组开发的实验设备和测量技术，这种能力使异常复杂和多样化的实验成为可能。包括超导加速器技术在内的研究设备的持续发展将与核科学计划同时进行。原子核在高激发能下的集体激发，特别是巨共振，将通过观察衰变伽马辐射来研究。这些研究探讨形状变化作为核温度的函数。具有非常高角动量的原子核的性质将使用康普顿抑制的高分辨率锗探测器阵列来测量。这项工作探讨了形状和微观核结构的变化作为角动量的函数。激光光谱学将用于研究远不稳定的原子核。激光光谱学通过超精细结构测量提供核尺寸和形状的信息。用新的布拉格曲线谱仪测量重核亚势垒聚变截面上的异常增强。测量粒子-粒子的相关性，并对其进行分析，以研究原子核-原子核反应动力学。为此已装配了一个特殊的探测器阵列。该研究将由5名教师、15名研究生和5名博士后进行。

This award will support a program of research in heavy ion nuclear physics at the Nuclear Structure Laboratory, State University of New York at Stony Brook, using a superconducting booster accelerator in conjunction with a model FN tandem accelerator. Together with the experimental equipment and measurement techniques developed by the Stony Brook group, this capability makes possible an unusually sophisticated and diverse range of experiments. Continued development of research equipment, including superconducting accelerator technology, will be carried out in parallel with the nuclear science program. Collective excitations of nuclei at high excitation energies, and giant resonances, in particular, will be studied with observation of the decay gamma radiation. These studies probe shape changes as a function of nuclear temperature. The properties of nuclei having very high angular momenta will be measured using an array of Compton suppressed, high resolution Ge detectors. This work probes changes in shape and microscopic nuclear structure as a function of angular momentum. Laser spectroscopy will be used to study nuclei far from stability. Laser spectroscopy provides information on nuclear sizes and shapes via hyperfine structure measurements. Anomalous enhancements in the cross section for subbarrier fusion of heavy nuclei will be studied through measurements using a new Bragg curve spectrometer. Measurements of particle-particle correlations will be made and analyzed to study nucleus-nucleus reaction dynamics. A special detector array has been assembled for this purpose. The research will be carried out by five faculty members, fifteen graduate students and five post-doctoral fellows.