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