轨道分子屏极高真空系统的抽气方程  

Extra High Vacuum Pumping Equation of Orbit Wake Shield Facilities

作　　者：达道安[1] 杨亚天[2] 阎少光[1] 

机构地区：[1]兰州物理研究所,兰州730000 [2]福建师范大学,福州350007

出　　处：《真空科学与技术学报》2005年第5期367-371,共5页Chinese Journal of Vacuum Science and Technology

基　　金："真空低温技术与物理"国家实验室资助(No.OOJS65.1.1HT6001)

摘　　要：地面真空系统中,气体处于封闭的真空容器内,达到平衡状态时,真空系统的抽气方程式是:P=Q/S;轨道分子屏系统是开放的,或者说具有部分真空容器,相应的抽气方程应该是怎样的形式呢?本文提出了一个物理模型,推导出了半球型及球冠型轨道分子屏极高真空系统的抽气方程。通过解含时间的微分方程,可得到相同的抽气方程。该方程适用于其它形状的轨道分子屏极高真空系统。Extra-high-vacuum（XHV） pumping equation of a hemispherical orbit wake shield facility,which is an open vacuum system in space,has been developed through two different approaches：one is derived from the time-dependent dynamic equation,and the other from the hemispherical or convex model we proposed. We suggest that the pumping equation should work well for the XHV system pumped by the orbit molecular shield with a geometry other than a hemisphere.

关 键 词：极高真空 轨道分子屏 抽气方程 

分 类 号：O552[理学—热学与物质分子运动论]