Nuclear Physics with Electromagnetic Probes at Jefferson Lab

这项研究是杰斐逊实验室a厅实验研究区的一项重大努力的一部分。我们的科学兴趣是帮助约束所谓的核物质的“状态方程”，这是理解致密恒星组成的关键因素。我们通过从铅原子的原子核中散射一束极化电子来做到这一点，其中散射概率对极化方向的依赖告诉我们中子在这个大的球形原子核中的平均分布。这里的资助是为了一个精密的仪器，它可以告诉我们电子束的极化程度。这种装置对a厅的大量不同实验也是至关重要的，因此是对核物理学界的一种服务。对核物理和核天体物理学界的科学影响是非常大的，这项工作是由不同学科、不同层次的许多学生进行的。因此，学生获得的训练不仅在核物理，但在磁输运应用和精密工程，无论是本科生和研究生。

This research is part of a large effort in the Hall A experimental research area at Jefferson Laboratory. Our scientific interest is to help constrain the so-called "equation of state" of nuclear matter, a critical ingredient to understanding the makeup of dense stars. We do this by scattering a beam of polarized electrons from the nuclei of lead atoms, where the dependence of the scattering probability on polarization direction tells us the average distribution of neutrons in this large, spherical nucleus. The contribution funded here is for a precision apparatus that would tell us the degree of polarization of the electron beam. Such an apparatus is also critical for a large number of different experiments in Hall A, and is consequently a service to the nuclear physics community. The scientific impact on the nuclear physics and nuclear astrophysics communities is very large, and the work is carried out with a number of students in various disciplines, at different levels. Consequently, students gain training not only in nuclear physics, but in magnetic transport applications and precision engineering, both as undergraduates and graduate students.