铯束管的出气率模型及应用  

Outgassing Rate Model and Its Application of Cesium Beam Tube

作　　者：陈江[1] 杨斓 成大鹏 郭美如[1] 杨军[1] 刘志栋[1] 马寅光[1] 黄良育[1] CHEN Jiang;YANG Lan;CHENG Dapeng;GUO Meiru;YANG Jun;LIU Zhidong;MAYinguang;HUANG Liangyu(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China;System Engineering Graduate School of Air Force Research Institute,Beijing 100076,China)

机构地区：[1]兰州空间技术物理研究所真空技术与物理重点实验室,兰州730000 [2]空军研究院系统工程研究所,北京100076

出　　处：《真空与低温》2019年第6期368-371,共4页Vacuum and Cryogenics

基　　金：国家自然科学基金（61971209）

摘　　要：铯束管是一种密封的电真空器件,为了能够长时间维持真空需对其进行烘烤与排气。在此过程中的出气率是无法获知的。本文提出了一种出气率模型,只要读出排气系统真空计的读数,通过模型,就可以得到铯束管的材料出气率。本文也给出了模型的一个应用,发现如果排气系统真空度优于1.2×10-7 Pa,那么铯束管可以封离排气系统。文中提出的方法也可应用于其他电真空器件。Cesium beam tube is a sealed electric vacuum device.In order to maintain the vacuum for a long time,it needs to be baked and exhausted.However,the outgassing rate in this process cannot be measured.A model of the outgassing rate is presented.According to the model,the outgassing rate of the cesium beam tube can be obtained from the reading of the vacuum gauge.An application of the model is also given.When applied to the exhaust system,if the pressure of the system is less than 1.2×10-7 Pa,the cesium beam tube can be sealed off from the exhaust system.The method presented herein can also be applied to other electric vacuum devices.

关 键 词：铯束管 出气率 排气系统 

分 类 号：TB771[一般工业技术—真空技术]