The emitted radiation preferably has a spectral radiant power distribution, for which {HEAD ~ the maximum} is at {TAIL ~ a wavelength} in the infrared range 
is at
The emitted radiation preferably has a spectral radiant power distribution , for which { HEAD ~ the maximum } is at { TAIL ~ a wavelength } in the infrared range
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH