The O+ 834-Å: Dayglow: Revised Cross Sections
R. Link, J. S. Evans, and G. R. Gladstone
This study assesses the impact of new O(3P) photoionization and N2 photoabsorption cross sections, and O+ oscillator strengths and transition probabilities, on OII 834-Å airglow calculations. 834-Å intensities computed using the new emission parameters are in good agreement with rocket measurements obtained in 1978 and 1980. The present study does not support a suggested reduction in the N2 photoabsorption cross section based on an earlier analysis of the rocket data. This study also explores the problem of determining F-region electron densities from satellite limb scans of the O+ 834-Å emission. Our results indicate that electron density profiles inferred from limb scans are not necessarily unique; estimates of NmF2 and HmF2 can vary by at least a factor of two and 50 km respectively.
For an analysis of the rocket OI 1304Å, 1356Å, and N2 LBH data, see:
