Improved charcoal trap for rare gas mass spectrometry.
A charcoal trap for progressive desorption of rare gases, including helium and neon, is described and performance data given. Cooling is by a commercial helium expansion refrigerator. Temperatures are readily controlled down to about 20 K. No cold, condensed gases are used.
Reynolds
J H
JH
Department of Physics, University of California, Berkeley, CA 94720, USA.
Jeffery
P M
PM
McCrory
G A
GA
Varga
P M
PM
D000042:Absorption; D002606:Charcoal / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000302:isolation & purification*; D013058:Mass Spectrometry / Q000295:instrumentation* / Q000379:methods; D013048:Specimen Handling / Q000295:instrumentation* / Q000379:methods; D014462:Ultrafiltration / Q000295:instrumentation* / Q000379:methods
D005740:Gases; D002606:Charcoal