Approaching the Theoretical Limit of Diamagnetic-Induced Momentum in a Rapidly Diverging Magnetic Nozzle

作     者：Kazunori Takahashi Christine Charles Rod W. Boswell 

作者机构：Department of Electrical Engineering and Computer Science Iwate University Morioka 020-8551 Japan Space Plasma Power and Propulsion Laboratory Research School of Physics and Engineering The Australian National University Canberra ACT 0200 Australia 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2013年第110卷第19期

页      面：195003-195003页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Japan Society for the Promotion of Science  JSPS  (25287150) 

主　　题：NOZZLES DIAMAGNETISM MOMENTUM (Mechanics) DIFFUSION PLASMA-wall interactions RADIO frequency 

摘      要：Cross-field diffusion and plasma expansion in a rapidly diverging magnetic nozzle are controlled while maintaining constant plasma production in a contiguously attached radio frequency plasma source. It is demonstrated that the measured electron-diamagnetic-induced axial momentum increases with increasing magnetic field strength to approach the theoretical limit derived using an ideal nozzle approximation. The measured axial momentum exerted onto the axial and radial plasma source boundaries validate the prediction from a maximum electron pressure model on the back wall and from a zero net axial momentum model on the radial wall.