Here is another with a stated wave length under what you calim does not exist.
UV Sterilization: Far-UVC light kills airborne flu viruses without ... www.laserfocusworld.com › lasers-sources › article › u... Use of overhead far-ultraviolet C light in public spaces could provide a ... “Unfortunately, conventional germicidal UV light is also a human health hazard and can lead to ... excimer lamps emitting in the 207–222 nm wavelength range (see figure). ... and optical sensing is used as a continuous-wave coherent optical source
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