{HEAD ~ The detector} has a chamber for receiving charged particles generated by the interaction between a particle beam generated by {TAIL ~ the microscope} and the sample 
{ HEAD ~ The detector } has a chamber for receiving charged particles generated by the interaction between a particle beam generated by { TAIL ~ the microscope } and the sample
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH