Physics of non-neutral plasmas confined on magnetic surfaces

限制在磁性表面上的非中性等离子体的物理学

• 批准号: 0613662
• 负责人: Thomas Pedersen
• 金额: --
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-15 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0613662&HistoricalAwards=false
• 关键词: Physics; non; neutral; plasmas; confined

The confinement of non-neutral plasmas by magnetic surfaces, such as those of a tokamak or a stellarator, is a new area of plasma research. The theory of such plasmas, which range from single component to quasi-neutral, has had a rapid development during the first three years of this project. A goal of the research is to use the strong electric fields of an electron rich plasma in a stellarator to confine the first laboratory electron-positron plasmas. The primary focus of the theory program has been on pure electron plasmas, in particular the properties of low density electron plasma equilibria. During the present award period, the theory of pure electron plasmas will be extended to partly neutralized plasmas. These plasmas have properties that are unlike either pure electron or quasi-neutral plasmas. Qualitatively new physics remains to be discovered. The theory program is closely associated with the Columbia Non-neutral Torus (CNT) experiment; theoretical results have already had a major impact on the design and the interpretation of CNT experiments. The interaction between CNT and theory is intensifying as both programs mature. These theories are also now being tested on two devices in Japan.In addition to graduate student participation, the program already involves substantial participation by undergraduate students as well as high school students, and will continue to do so in the future. Women students and students from historically underrepresented minorities have participated in this research, and the investigators will continue to actively recruit among groups underrepresented in science.

磁性表面（例如Tokamak或Stellarator）将非中性等离子体限制为血浆研究的新领域。这种等离子体的理论范围从单个组成部分到准中性，在该项目的头三年中已经有了迅速的发展。该研究的目的是在恒星中使用富含电子等离子体的强电场来限制第一个实验室电子峰等离子体。理论程序的主要重点是纯电子等离子体，特别是低密度电子等离子体平衡的特性。在目前的奖项期间，纯电子等离子体的理论将扩展到部分中和等离子体。这些等离子体具有与纯电子或准中性等离子体不同的特性。定性的物理学仍然有待发现。该理论计划与哥伦比亚非中性圆环（CNT）实验密切相关。理论结果已经对CNT实验的设计和解释产生了重大影响。随着两个程序的成熟，CNT与理论之间的相互作用正在加剧。 这些理论现在也在日本的两个设备上进行了测试。除了研究生参与外，该计划已经涉及本科生和高中生的大量参与，并且将来会继续这样做。来自历史上代表性不足的少数群体的女学生和学生参加了这项研究，调查人员将继续积极招募科学领域不足的群体。