In this exemplary embodiment, {HEAD ~ N type conductivity} determining ions, such as {TAIL ~ phosphorus} or arsenic, are implanted 
In this exemplary embodiment , { HEAD ~ N type conductivity } determining ions , such as { TAIL ~ phosphorus } or arsenic , are implanted
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH