Plasma is generated within the space to cause dissociation of {HEAD ~ the hydrogen} containing {TAIL ~ gas} and promote a reaction between the material and hydrogen containing gas 
containing
Plasma is generated within the space to cause dissociation of { HEAD ~ the hydrogen } containing { TAIL ~ gas } and promote a reaction between the material and hydrogen containing gas
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH