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