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

具有电子散射的核子和少体核系统的结构

• 批准号: 0701679
• 负责人: Gerassimos Petratos
• 金额: $ 42.6万
• 依托单位: Kent State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2012-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0701679&HistoricalAwards=false
• 关键词: Structure; Nucleon; Few; Body; Nuclear

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.

该奖项支持对核物质，质子和中子以及自然界最轻的核，氘和氦气的内部结构和动力学的实验研究。 研究基于氢，氘，trium和氦核的高能电子的散射。 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仪的设施在具有高能电子的低温目标环境中轰击核。用由超导电磁体和亚原子颗粒探测器组成的磁光谱仪检测到所得的核反应产物。预计结果将提供有关质子和中子内三个夸克的分布的基本信息，在氘和氦气的量子机械波函数上，以及这两个光核的质子和中子成分相互作用的机制。 提出的研究的预期实验数据将根据我们对质子和中子的结构的理解提供有价值的意见，这些Quark成分在量子染色体动力学的现代理论框架内，以及建立一致的现代理论，描述了最简单的核系统。