论文标题
公理对称磁管陷阱中无碰撞粒子动态
Collisionless particle dynamic in an axi-symmetric diamagnetic trap
论文作者
论文摘要
研究了极高的等离子压力等于真空磁场压力（所谓的Dimamagnetic限制机制）的Axi对称镜像机中的粒子动态。由于血浆diamagnetism的挤出，磁场从中部区域挤出会导致磁矩不予保存，并可能导致混乱的运动和颗粒的快速损失。以下机制可以在无限时间内提供粒子限制：绝对限制具有高方位速度的颗粒，并保存绝热不变的粒子在平滑磁场中移动的粒子。在直接的数值模拟中获得并验证了粒子限制的标准和无限粒子寿命的估计。讨论了气动力流出方案中磁磁陷阱中的粒子限制时间。
Particle dynamic in an axi-symmetric mirror machine with an extremely high plasma pressure equal to pressure of vacuum magnetic field (so-called regime of diamagnetic confinement) is investigated. Extrusion of magnetic field from central region due to plasma diamagnetism leads to non-conservation of the magnetic moment and can result in chaotic movement and fast losses of particles. The following mechanisms can provide particle confinement for unlimited time: absolute confinement of particles with high azimuthal velocity and conservation of adiabatic invariant for particle moving in smooth magnetic field. The criteria of particle confinement and estimations of lifetime of unconfined particles are obtained and verified in direct numerical simulation. Particle confinement time in the diamagnetic trap in regime of gas-dynamic outflow is discussed.
