Quantitative laser photoacoustic detector spectroscopy - HD 5-0 transitions

Intracavity photoacoustic spectroscopy of HD in the 5-0 R(0), R(1), and R(2) transitions demonstrates the use of a transition of known strength to calibrate the response of a photoacoustic detector by simultaneous in situ measurements. Excellent agreement in line strengths for the HD 5-0 transitions is found with the earlier determination due to McKellar et al. (1976). The present experiments, however, were conducted with a pressure-pathlength product only 10 to the -6th of that used by McKellar et al.