System provides high pumping capacity even for noble gases. First stage, removes water and CO2 from input gas. Second stage, removes noble gases except helium and some lighter gases not trapped by first stage. Third stage, traps all remaining gases. All three stages mounted inside liquid-nitrogen Dewar that cools first stage. Pump small enough for general laboratory use.
Cryogenic Vacuum Pump
NASA Tech Briefs ; 7 , 4
1983-10-01
Miscellaneous
No indication
English