Numerical and Theoretical Investigations of Non-Neutral and Positron-Electron Plasma Dynamics

非中性和正电子等离子体动力学的数值和理论研究

• 批准号: 0317359
• 负责人: Thomas Pedersen
• 金额: $ 30万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0317359&HistoricalAwards=false
• 关键词: Numerical; Theoretical; Investigations; Non; Neutral

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. This research focuses on the development of the theory of confinement by magnetic surfaces of plasmas that range from single component to quasi-neutral, which is in part motivated by the confinement of electron-positron plasmas. The strong electrostatic potential that arises when plasmas on magnetic surfaces are far from charge neutrality provides excellent confinement for the minority species. This makes magnetic surfaces (a stellarator) particularly suited for confining positron-electron plasmas. Positron-electron plasmas, also known as pair plasmas, are uniquely different from electron-ion plasmas due to the perfect mass symmetry and perfect charge antisymmetry. Partly neutralized and pair plasmas are relevant to fusion plasma physics. State of the art fusion plasma simulation codes, such as GS2, can be benchmarked against a pair-plasma experiment. The codes should be able to accurately predict the physics of pair plasmas in a magnetic surface configuration, since the mass symmetry actually simplifies the problem.

通过磁性表面（例如托卡马克或仿星器的磁性表面）限制非中性等离子体是等离子体研究的一个新领域。 这项研究的重点是等离子体磁性表面约束理论的发展，范围从单组分到准中性，部分是由电子-正电子等离子体的约束推动的。当磁性表面上的等离子体远离电荷中性时产生的强静电势为少数物质提供了极好的限制。 这使得磁性表面（仿星器）特别适合限制正电子电子等离子体。正电子-电子等离子体，也称为对等离子体，由于完美的质量对称性和完美的电荷反对称性而与电子-离子等离子体有着独特的不同。 部分中和等离子体和对等离子体与聚变等离子体物理有关。最先进的聚变等离子体模拟代码，例如 GS2，可以针对双等离子体实验进行基准测试。这些代码应该能够准确预测磁性表面配置中等离子体对的物理特性，因为质量对称性实际上简化了问题。