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|Author(s):||D J. Robichaud; Joseph T. Hodges; Linda R. Brown; D Lisak; Piotr Maslowski; Charles E. Miller;|
|Title:||Experimental Line Parameters of the Oxygen A-Band Using Frequency-Stabilized Cavity Ring-Down Spectroscopy|
|Published:||January 01, 2008|
|Abstract:||Line intensities, self- and air-broadened linewidths, pressure-induced shifts, and collisional narrowing coefficients were measured from 18 <= J' <= 32 in the P branch of the O2 A-band (12,975 13,055 cm^(-1)). Spectra were recorded using the frequency-stabilized cavity ring-down spectrometer located at NIST, Gaithersburg, MD with a spectral resolution < 0.0001 cm^(-1) and noise-equivalent absorption coefficient of 6 10^(-10) cm^(-1) Hz^(-1/2). The line intensities determined in the present work are ~1% lower than the values in current spectroscopic databases. However, we measure broadening coefficients that are up to 20% lower than the extrapolated values given in HITRAN 2004. We discuss the implications of our results for accurate remote sensing of surface pressure and photon pathlength distributions.|
|Citation:||Journal of Molecular Spectroscopy|
|Pages:||pp. 1 - 13|
|Keywords:||A-Band,absorption spectroscopy,cavity ring-down,oxygen,remote sensing|
|Research Areas:||Remote Sensing, Spectroscopy, Electronic, Near Infra-Red|