Nuclear Structure Studies with Fast Neutrons

肯塔基州大学的核结构研究计划主要集中在核光谱学、中子诱导反应和中子散射等方面。 实验工作旨在利用大学加速器设施的中子生产能力和该实验室开发的独特检测系统;然而，还与其他机构的同事进行补充性合作研究。 核结构的研究主要面向探索多声子振动激发在近球形核，检查集体激发磁和电偶极跃迁，定义质子和中子在集体模式中的作用，并了解核壳结构和核形状转变的性质。混合对称态的表征，新类型的集体模式，在弱变形核和声子耦合激发这些国家是一个高度优先事项。 中子散射研究有助于阐明中子激发和其他探测器之间的差异，将补充集体激发微观基础的研究。 中等质量核的同位旋对称性研究是一个新的研究方向。 核水平的寿命测量与多普勒频移衰减方法和γ-γ符合测量，其中的方法已经在我们的实验室开发，将在许多这些研究中发挥至关重要的作用。将在其他领域进行精心挑选的实验，这些实验特别适合于肯塔基州大学加速器实验室的能力和设施。 在本科，研究生和研究生水平的核科学学生的教育是强调，并努力提供一个多样化的工作环境在肯塔基州大学是一个持续的，该计划的重要组成部分

The nuclear structure research program at the University of Kentucky is focussed on timely, related topics in nuclear spectroscopy, neutron-induced reactions, and neutron scattering. Experimental work is designed to take advantage of the neutron production capabilities at the University's accelerator facility and the unique detection systems that have been developed in this laboratory; however, complementary, collaborative research with colleagues at other institutions is also pursued. Nuclear structure studies are primarily oriented toward exploring multiphonon vibrational excitations in nearly spherical nuclei, examining magnetic and electric dipole transitions in collective excitations, defining the roles of protons and neutrons in collective modes, and understanding nuclear shell structure and the nature of nuclear shape transitions. The characterization of mixed-symmetry states, new types of collective modes, in weakly deformed nuclei and phonon-coupled excitations of these states is a high priority. Neutron scattering studies, which aid in elucidating the differences between neutron excitation and other probes, will complement studies of the microscopic basis of collective excitations. The study of isospin symmetry in medium-mass nuclei is a new research direction. Nuclear level lifetime measurements with the Doppler-shift attenuation method and gamma-gamma coincidence measurements, for which the methodologies have been developed in our laboratory, will play crucial roles in many of these studies. Carefully selected experiments in other areas which are particularly appropriate to the capabilities and facilities at the University of Kentucky accelerator laboratory will be pursued. The education of nuclear science students at the undergraduate, graduate, and post-graduate levels is emphasized, and efforts to provide a diverse working environment at the University of Kentucky are an ongoing, vital component of the program