The absorber rod comprises {TAIL ~ cladding} of {HEAD ~ stainless steel} closed by plugs and containing a column of absorber pellets e.g. of boron carbide 
The absorber rod comprises { TAIL ~ cladding } of { HEAD ~ stainless steel } closed by plugs and containing a column of absorber pellets e.g. of boron carbide
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH