{HEAD ~ Detecting method} of impurity concentration in crystal, method for producing single crystal and {TAIL ~ apparatus} for the pull up of a single crystal 
{ HEAD ~ Detecting method } of impurity concentration in crystal , method for producing single crystal and { TAIL ~ apparatus } for the pull up of a single crystal
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH