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

非中性等离子体被磁性表面(如托卡马克或星光器)限制是等离子体研究的一个新领域。这项研究致力于发展从单组分到准中性的等离子体的磁面约束理论，这在一定程度上是由正负电子等离子体的约束引起的。当磁性表面的等离子体远离电荷中性时，产生的强大静电势为少数物种提供了极好的限制。这使得磁性表面(星状物)特别适合于限制正电子-电子等离子体。正电子等离子体，也被称为对等离子体，由于完全的质量对称性和完全的电荷反对称性，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成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，如GS2，可以作为对等离子体实验的基准。由于质量对称性实际上简化了问题，这些代码应该能够准确地预测磁性表面构型中的双等离子体的物理。

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.