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