{HEAD ~ The phosphor} is used in {TAIL ~ light source} that comprises a UV radiation source to convert efficiently UV radiation to visible light 
is used in
{ HEAD ~ The phosphor } is used in { TAIL ~ light source } that comprises a UV radiation source to convert efficiently UV radiation to visible light
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH