Experimental Line Parameters of the Oxygen A-Band Using Frequency-Stabilized Cavity Ring-Down Spectroscopy

Published

January 1, 2008

Author(s)

D J. Robichaud, Joseph T. Hodges, Linda R. Brown, D Lisak, Piotr Maslowski, Charles E. Miller

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

Volume

248

Pub Type

Journals

Keywords

A-Band, absorption spectroscopy, cavity ring-down, oxygen, remote sensing

Citation

Robichaud, D. , Hodges, J. , Brown, L. , Lisak, D. , Maslowski, P. and Miller, C. (2008), Experimental Line Parameters of the Oxygen A-Band Using Frequency-Stabilized Cavity Ring-Down Spectroscopy, Journal of Molecular Spectroscopy (Accessed April 18, 2024)