Rotational collisional narrowing in the NO fundamental Q branch, studied with cw stimulated Raman spectroscopy
- 15 November 1984
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 81 (10) , 4241-4245
- https://doi.org/10.1063/1.447457
Abstract
Self‐broadened NO Q‐branch spectra were obtained in the pressure region ∼20–100 kPa. We determined J‐ and Ω‐dependent pressure broadening coefficients. The observed collisional narrowing was fitted by means of a relaxation matrix theory, incorporating recent experimental and theoretical values of NO state‐to‐state rates. A ‘‘fitting law’’ representation of the state‐to‐state rates yielded good agreement with both the measured broadening coefficients and the observed spectrum.Keywords
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