Experimental Nuclear Physics Research

9312428纳达森，密歇根大学迪尔伯恩大学的核物理研究项目，由首席研究员和大约四名本科生进行。它侧重于研究核结构和核反应机制，以评估理论预测，并更好地了解一般的核现象。Li6离子在210 MeV和318 MeV的弹性散射给出了Li6核相互作用的能量和质量依赖关系的宏观描述。更根本的是，这些数据被用来评估微观折叠模型计算。将这些研究推广到Li 7、Li 9和Li 11，将说明额外中子引起的微扰和使用不稳定束流的影响。用MSU-4PI阵列测量了原子核碰撞产生的轻离子，阐明了重离子反应的许多特征。增加了布拉格曲线探测器和平行板雪崩计数器，便于测量较重的碎片，从而拓宽了对核物质和重离子反应动力学的研究。在100~200 MeV范围内的(P，Phe_4)反应研究和在580 MeV下对(He_4，2He4)的测量表明，能量大于100 MeV/核子的入射粒子提供了关于核内α聚集的可靠信息。这些研究将继续进行，以便研究较重原子核的阿尔法团簇结构，希望确定长寿命原子核的阿尔法衰减率。

9312428 Nadasen The nuclear physics research program of the University of Michigan Dearborn is carried out by the principal investigator and about four undergraduates students. It focuses on studies of nuclear structure and nuclear reaction mechanisms in order to evaluate theoretical predictions and to provide a better understanding of nuclear phenomena in general. Elastic scattering of Li 6 ions at 210 and 318 MeV on a range of targets has provided a global macroscopic description of the Li 6 nucleus interaction in terms of its energy and target mass dependence. More fundamentally, the data were used to evaluate microscopic folding model calculations. Extension of these studies to Li 7, Li 9 and Li 11 will illustrate the perturbation caused by the extra neutrons and the effect of using unstable beams. Measurements of light ions emanating from nucleus nucleus collisions using the MSU 4pi Array have elucidated many features of heavy ion reactions. The addition of Bragg curve detectors and parallel plate avalanche counters facilitate measurement of heavier fragments and thus broadened the studies of nuclear matter and dynamics of heavy ion reactions. (p,pHe 4) reaction studies in the 100 200 MeV region and measurements of (He 4, 2He 4) at 580 MeV indicate that projectiles with energies above 100 MeV/Nucleon provide reliable information of alpha clustering in nuclei. These studies will be continued in order to investigate alpha cluster structures of heavier nuclei with the hope of determining alpha decay rates of long lived nuclei.