Desorption of oxygen and {HEAD ~ inert gas} at opposite ends of the LiAgX bed allows the inert gas to be recovered with {TAIL ~ minimum oxygen contamination} 
Desorption of oxygen and { HEAD ~ inert gas } at opposite ends of the LiAgX bed allows the inert gas to be recovered with { TAIL ~ minimum oxygen contamination }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL