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; 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.

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。 这项研究的重点是从单个成分到准中性的等离子体的磁性表面限制理论的发展，这部分是由电子脉络膜等离子体限制的。当磁性表面上的等离子体远非电荷中立性时，产生的强静电潜力为少数种类提供了极好的限制。 这使磁性表面（恒星）特别适合限制正电子电子等离子体。正电子电子等离子体（也称为成对等离子体）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完全不同。 部分中和和对等离子体与融合等离子体物理学有关。可以针对成对的浮力实验对最先进的等离子体模拟代码（例如GS2）进行基准测试。这些代码应能够准确地预测磁表面构型中的配对等离子体的物理，因为质量对称实际上简化了问题。