Device and method for producing charged pollutants through field emission in vacuum

一种真空中采用场致发射制造带电污染物的装置及方法

Abstract

The invention relates to a device and method for producing charged pollutants through field emission in vacuum, belonging to the application field of vacuum technology. The device comprises a vacuum over wall of an accelerator, a vacuum over wall of a discharge electrode, a vacuum plug, a vacuum flange, a fixture of the discharge electrode, a tungsten filament, a connecting rod of the accelerator, a vacuum-pumping system, an air outlet cover, a heating table, a fixed support, a vacuum chamber, a support table of the accelerator, the accelerator, a fastening screw, a ceramic part, an accelerator grid, a cable fastening screw, a peripheral equipment temperature control system, a power supply of the discharge electrode and a power supply of the accelerator. The method is as follows: the vacuum chamber is pumped after the sample is placed and fixed in a sample container, and the tungsten filament emits electrons which act with the air outlet product of the sample to form the charged pollutants. The charged pollutants produced at different energy and density under the action of the electrons can be obtained in vacuum conditions by different material air outlet pollutants by means of the method.
本发明涉及一种真空中采用场致发射制造带电污染物的装置和方法,属于真空技术应用领域。所述装置包括加速极真空过壁、放电极真空过壁、真空插头、真空法兰、放电极夹具、钨丝、加速极连接杆、抽真空系统、出气盖、加热台、固定架、真空室、加速极支撑台;加速极;紧固螺钉;陶瓷件;加速极栅网;电缆紧固螺钉,以及外围设备温控系统、放电极电源、加速极电源。所述方法如下:将样品装入样品容器固定后,对真空室抽真空,通过钨丝发射电子使电子与样品的出气气体产物相互作用,形成带电污染物。利用本方法可得到真空条件下,不同材料出气污染物在不同能量和密度电子作用下产生的带电污染物。

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