{HEAD ~ An accelerating electrode field} is set up in {TAIL ~ the chamber} by one or more electrodes, and the chamber is sealed by an electronically conductive barrier so as to prevent gas leaking into the chamber, whilst being sufficiently thin to enable charged particles to travel across the barrier and thereby be detected by the detector 
is set up in
{ HEAD ~ An accelerating electrode field } is set up in { TAIL ~ the chamber } by one or more electrodes , and the chamber is sealed by an electronically conductive barrier so as to prevent gas leaking into the chamber , whilst being sufficiently thin to enable charged particles to travel across the barrier and thereby be detected by the detector
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH