Instruction manual for Gunn-diode microwave cavity ammonia monitor

Analytical microwave spectrometry

“…Measurement of the intensities of spectral lines (both absolute and relative) can give additional information. The intensity of radiation arriving at the detector (Figure 1 > is given by: / I&~yL (1) where is the absorption coefficient, and L is the absorption path length.…”

AnalyticalMicrowave Spectrometry

“…These considerations, based upon absorption frequencies alone, show that specific compound identifications are readily made, given sufficient signal intensity.-Measurement of the intensities of spectral lines (both absolute and relative) can give additional information. The intensity of radiation arriving at the detector (Figure 1) is given by: lh)e~yL (1) where 7 is the absorption coefficient, and L is the absorption path length. The signal A/ is then AI = Iq -I a I(tyL for small 7.…”