Review of cold atom quantum-based vacuum metrology
With the development of laser cooling and trapping atom technology,the pressure measure-ment range of cold atom quantum-based vacuum metrology(CAVM)can reach or even lower 10-4～10-10Pa.In addition,the loss rate of cold atoms in this method is only related to the collision cross sec-tion of cold atoms and gases,so this technology is expected to develop into a new generation of vacuum metering technology.In this paper,the basic concept,structure and working principle of magneto-optical traps for laser cooling atoms and trapping atoms are introduced;Then,the basic principle of CAVM is introduced.Through collecting and sorting out a large number of domestic and foreign literature about this technology,the development trends and trends of CAVM at home and abroad in recent years are compre-hensively reviewed;Finally,the development trend of CAVM is prospected.
NETL
NSTL
万方数据
