Identification of the ECR zone in the SWISSCASE ECR ion source

从ECR等离子体源膨胀的氢等离子体流动动力学的实验与理论研究

Experimental and Theoretical Study of Flow Dynamics of Expanding Hydrogen Plasma from an ECR Plasma Source

本研究通过实验和理论分析，揭示了ECR氢等离子体膨胀中的第二电离区及其产生的双电层和暖电子群，阐明了流动动力学机制。

A comparative analysis of the EEDF obtained by regularization methods and by a least-squares fitting

To establish the electron energy distribution function (EEDF), the second derivative of a Langmuir probe current-voltage (I-V) characteristic is numerically integrated using the Tikhonov singular value decomposition regularized method. A comparison of the numerically intagrated EDDF and by a least-squares fitting is discussed. The used I-V haracteristic is measured in an ECR plasma source using a cylindrical probe and the plasma parameters are determined by the Laframboise theory. This technique allows a rapid analysis of plasma parameters at any gas pressure. The obtained EEDF, for the case o…

Anisotropic Electron Heating in an Electron Cyclotron Resonance Thruster with Magnetic Nozzle

In a grid-less Electron Cyclotron Resonance (ECR) plasma thruster with a diverging magnetic nozzle, the magnitude of the ambipolar field accelerating the positive ions depends of the perpendicular energy gained by the electrons. This work investigates the heating of the electrons by electromagnetic waves, taking their bouncing motion into account in a confining well formed by the magnetic mirror force and the electrostatic potential of the thruster. An electromagnetic Particle-In-Cell (PIC) code is used to simulate the plasma in a magnetic field tube. The code's Maxwell solver is based on a se…

基于ECR的大体积等离子体源中氢离子能量分布的质谱研究

Mass Spectrometry Studies of Hydrogen Ions Energy Distributions in an ECR- based Large Volume Plasma Source

本研究通过MBMS等设备测量基于ECR的LVPS中H⁻离子能量分布，结合LP与MBMS数据得出H⁻密度等关键参数，为H⁻体产生提供了有利依据。