Photoacoustic spectroscopy of NH_3 at the 9-μm and 10-μm ^12C^16O_2 laser wavelengths

Abstract

A spectrophone and a CO(2) laser source were used to determine the absorption coefficients of NH(3) at seventy-seven laser lines in the 00 degrees 1-02 degrees 0 band at 9.4 microm and the 00 degrees 1-10 degrees 0 band at 10.4 microm. The NH(3) was buffered with N(2) to 1 atm at 295 K; its concentration ranged from 30 ppm to 200 ppm. The absorption coefficients and their probable errors are tabulated.