论文标题
偶极子磁场中无碰撞正电子 - 电子等离子体的最大熵状态
Maximum entropy states of collisionless positron-electron plasma in a dipole magnetic field
论文作者
论文摘要
我们正在开发一个基于悬浮超导磁体产生的偶极磁场的正电子 - 电子等离子体陷阱，以研究带有质量对称性和反异常成分的磁化等离子体的物理。这种实验室磁层对于理解天体物理环境中的配对等离子体至关重要，例如磁铁和黑孔，代表了一种新型技术，具有潜在的应用在反物质限制和相干伽马射线激光器的开发中。该设备的设计需要对可实现的自组织稳态进行先发制人物分析。在这项研究中，我们构建了一个理论模型，描述了由偶极磁场限制的无碰撞正电子 - 电子等离子体的最大熵状态，并通过分析三种绝热不变式对相位太空分布功能的效果，在广泛的物理参数下证明了这两种物种的有效限制。通过对最大熵状态对应的每个物种的空间密度，静电势和环形旋转速度的数值评估来验证该理论。
We are developing a positron-electron plasma trap based on a dipole magnetic field generated by a levitated superconducting magnet to investigate the physics of magnetized plasmas with mass symmetry as well as antimatter components. Such laboratory magnetosphere is deemed essential for the understanding of pair plasmas in astrophysical environments, such as magnetars and blackholes, and represents a novel technology with potential applications in antimatter confinement and development of coherent gamma-ray lasers. The design of the device requires a preemptive analysis of the achievable self-organized steady states. In this study, we construct a theoretical model describing maximum entropy states of a collisionless positron-electron plasma confined by a dipole magnetic field, and demonstrate efficient confinement of both species under a wide range of physical parameters by analysing the effect of the three adiabatic invariants on the phase space distribution function. The theory is verified by numerical evaluation of spatial density, electrostatic potential, and toroidal rotation velocity for each species in correspondence of the maximum entropy state.
