Mechanisms of E × B Drift Rotation of a Vortex String in a Pure Electron Plasma
Mechanisms of E × B Drift Rotation of a Vortex String in a Pure Electron Plasma
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纯电子等离子体中涡弦E×B漂移旋转的机制
DOI：
10.1585/pfr.8.2401034
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发表时间：
2013
影响因子：
0.8
通讯作者：
Youngsoo Park
中科院分区：
文献类型：
--
作者：
Y. Soga;T. Mimura;Y. Kato;Youngsoo Park
研究了在Malmberg-Penning阱中，纯电子等离子体绕圆柱形容器轴旋转时的能量分布。在从电子发射器注入后被捕获几微秒的电子束中，观察到能量分布的突然弛豫。电子柱的宏观E × B漂移旋转主要受微观轴向能量分布支配，轴向能量分布决定了阱末端反射的有效位置，即外部阱电位作用于粒子的径向电场。
Energy distribution of a pure electron plasma column rotating around the axis of a cylindrical vessel due to an E × B flow in a Malmberg–Penning trap is investigated. An abrupt relaxation of the energy distribution was observed in an electron string trapped for a few microseconds after injection from an electron emitter. The macroscopic E × B drift rotation of the electron column is mainly dominated by the microscopic axial energy distribution which determines the effective position of reflection at the end of the trap, that is, a radial electric field acting on the particles from an external trap potential.