Teledyne Camera Accessories T100 Manual Do Utilizador

13.1.7.2. PMT OPTICAL FILTER 

The PMT used in the T100 reacts to a wide spectrum of light which includes much of 
the visible spectrum and most of the UV spectrum. Even though the 214 nm light used 
to excite the SO

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 is focused away from the PMT, some of it scatters in the direction of 

the PMT as it interacts with the sample gas. A second optical band pass filter placed 
between the sample chamber (refer to Figure 13-2) and the PMT strips away light 
outside of the fluorescence spectrum of decaying SO

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* (refer to Figure 13-5) including 

reflected UV form the source lamp and other stray light.  

 

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06807C DCN6650