In some embodiments, another light source 314 and {HEAD ~ associated optics} may be provided by {TAIL ~ an analyzer} 
provided by
In some embodiments , another light source 314 and { HEAD ~ associated optics } may be provided by { TAIL ~ an analyzer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL