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eeo's picture

whats the different etween film transmission and HATR?

steven cat
steven cat's picture
transmission: the IR light

transmission: the IR light goes directly through the film
HATR: this is reflectance technique. the light just penetrates a depth (about 2um) of a film.
A=e l C
If the same film will be measured by 2 technique, the transmission will give more signal than reflectance technique