Line intensities in the ν8 band of HNO3

Abstract

Line intensity measurements have been made on the v8 band of HNO3 using a high-resolution Fourier transform infrared spectrum in the region 739-800 cm-1. A least-squares fit of a total of 710 line intensities in the P and R branches was performed, leading to accurate determination of five dipole moment operator constants. By utilizing these constants, the observed line intensities are well reproduced with an average random error of 6% and the integrated band intensity is found to be 15.7 ± 0.9 cm-2 atm-1 at 296 K. © 1996 Academic Press, Inc.