However, the invention does not exclude other gaseous media, such as for example a mixture containing {TAIL ~ carbon monoxide}, of which {HEAD ~ excitation} produces an emission, still in the infrared, of about 5 μm wave length 
of
However , the invention does not exclude other gaseous media , such as for example a mixture containing { TAIL ~ carbon monoxide } , of which { HEAD ~ excitation } produces an emission , still in the infrared , of about 5 μm wave length
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH REL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH