Research in Intermediate Energy Nuclear Physics

中能核物理研究

• 批准号: 0354878
• 负责人: Ricardo Alarcon
• 金额: --
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-15 至 2008-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0354878&HistoricalAwards=false
• 关键词: Research; Intermediate; Energy; Nuclear; Physics

The proposed research seeks to answer fundamental questions about the structure of the nucleon and of the nuclear few-body systems. Experiments are carried out at electron accelerators of intermediate energies. Developments in the last two decades in terms of producing polarized, continuous electron beams and the advent of polarized internal gas targets have introduced a new technique of measurements that fully exploit the spin degrees of freedom. This new technique opens the window to perform definite measurements of fundamental quantities like the charge distribution of the neutron. Precise knowledge of the structure of the neutron at intermediate energies is essential to constrain models of nucleon structure based on the fundamental theory of the strong interaction, quantum chromodynamics. It is also a key ingredient in understanding the nuclear physics of the few-body systems as well as the results derived from other fundamental electron scattering experiments. The proposed activities will produce new scientists at the Ph.D. level, will train young scientists at the postdoctoral level, will give research experience in fundamental physics to undergraduate students, and will contribute to the ascent of a large state university as a premier research institution. The advancement of the careers of women and ethnic minorities is an integral part of this process. Furthermore, the demand for state-of-the-art equipment utilizes the University's technical workforce and that of the society at large.

这项拟议的研究试图回答有关核子结构和核少数体系统的基本问题。实验是在中能电子加速器上进行的。在过去的二十年里，在产生极化的、连续的电子束方面的发展，以及极化内部气体靶的出现，引入了一种充分利用自旋自由度的新的测量技术。这项新技术打开了一扇窗，可以对基本量进行明确的测量，比如中子的电荷分布。在强相互作用的基本理论--量子色动力学的基础上，精确地了解中能中子的结构对于约束核子结构模型是至关重要的。它也是理解少体系统核物理以及从其他基本电子散射实验得出的结果的关键因素。拟议的活动将培养新的博士水平的科学家，培养博士后水平的年轻科学家，为本科生提供基础物理方面的研究经验，并将有助于一所大型州立大学崛起为一流的研究机构。妇女和少数民族事业的发展是这一进程的一个组成部分。此外，对最先进设备的需求利用了大学的技术人员和整个社会的技术人员。