Structure of the Nucleon and Few-Body Nuclear Systems with Electron Scattering

该奖项支持对核物质组成部分（质子和中子）以及自然界中最轻的原子核（氘和氦）的内部结构和动力学的实验研究。 这些研究是基于高能电子从氢、氘、氚和氦核的散射。 拟议的研究使用杰斐逊实验室的连续电子束加速器和霍尔A光谱仪设施，用高能电子轰击低温靶环境中的原子核。由此产生的核反应产物由超导电磁铁和亚原子粒子探测器组成的磁谱仪检测。这些结果有望为质子和中子中三种夸克的分布、氘和氦的量子力学波函数以及这两种轻核的质子和中子组分的相互作用机制提供基本信息。 预期的实验数据，从拟议的调查将提供宝贵的投入，我们的理解质子和中子的结构，在其三个夸克成分的现代理论框架内的量子色动力学，并建立一个一致的现代理论描述最简单的核系统。

This award is supporting experimental studies of the internal structure and dynamics of the constituents of nuclear matter, the proton and neutron, and of the lightest nuclei in nature, the deuterium and helium. The studies are based on scattering of high-energy electrons off hydrogen, deuterium, tritium and helium nuclei. The proposed research uses the Continuous Electron Beam Accelerator and Hall A Spectrometer Facilities of Jefferson Lab to bombard nuclei in cryogenic target environments with high-energy electrons. The resulting nuclear reaction products are detected with magnetic spectrometers comprised of superconducting electromagnets and subatomic particle detectors. The results are expected to provide fundamental information on the distributions of the three quarks inside the proton and neutron, on the quantum mechanical wave functions of deuterium and helium, and on the mechanism of the interaction of the proton and neutron constituents of these two light nuclei. The expected experimental data from the proposed investigations will offer valuable input to our understanding of the structure of the proton and neutron in terms of their three quark constituents within the modern theoretical framework of Quantum Chromodynamics, and to the establishment of a consistent modern theory describing the simplest nuclear systems.