等离子体鞘层和预鞘是连接电极、材料表面等器壁和等离子体的重要区域,无论在低温等离子体材料处理还是在聚变等离子体边界层物理领域都有重要应用.对等离子体鞘层和预鞘已有大量理论研究,但直接实验诊断甚少1.等离子体中高能电子或离子轰击器壁表面会产生二次电子,在壁附近积聚形成电势低于壁的虚阴极.对二次电子引起的虚阴极结构有少数理论研究,但没有实验诊断.
Considering the role of thermal effects on the Weibel-type instabilities in the beam-plasma systems,earlier studies mainly focused on the suppression effect of the beam temperature [1-3],while the amb
Proper wall conditioning has turned out to be an essential element for achieving the highest possible plasma performance in present day fusion devices.The various coating ways were tested and were imp
高气压,尤其是大气压电子束等离子体由于一系列特殊的物理性质及广泛的工业、军事应用,一直是国内外研究的热点.为研究高能电子束与高气压背景气体相互作用关系以及电子束等离子体的性质,我们设计搭建了高气压电子束等离子体实验装置.此装置束流源采用连续型电子枪,电子束能量为0-70keV,束流大小0-200mA,束斑直径3mm,真空系统采用连续差分真空与电弧等离子体窗结合的方法,使气压从电子枪内部要求的高真空
Bio-molecular machines play essential functional roles in cellular environments full of fluctuations and noises [1].The nanoscale bio-engines usually work far from equilibrium by transforming chemical
Liquid crystal droplets have long inspired hopes of gaining insight into the mechanisms of structural organization of cells.The comparison between liquid crystal droplets and cell,however,is not strai
This paper studies a periodic driven diffusive system,which separates into two equal‐sized parts with different values of hopping rates.Competition of the two different driven parts leads to various b