Publication Abstracts

Green 1985

Green, S., 1985: Calculation of pressure-broadened linewidths for CO in Ar. J. Quant. Spectrosc. Radiat. Transfer, 33, 299-305, doi:10.1016/0022-4073(85)90191-8.

Calculations of the pressure-broadening cross sections of CO in Ar have been made within the infinite-order sudden (IOS) and coupled states (CS) quantum scattering approximations. Two intermolecular potentials were used, a pairwise additive atom-atom potential which has been employed previously in semiclassical (modified Anderson theory) studies of this system and one calculated ab initio within an electron gas formalism. Predictions from the two potentials generally agree within about 25% and bracket experimental values (except for some recent high temperature data obtained in shock tube experiments). The CS approximation appears to be quite accurate although computationally expensive. The much cheaper IOS approximation is accurate of the J = 0-1 line but does not properly predict the dependence on line number. The quantum results are also compared with earlier semi-classical values.

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BibTeX Citation

  author={Green, S.},
  title={Calculation of pressure-broadened linewidths for CO in Ar},
  journal={Journal of Quantitative Spectroscopy and Radiative Transfer},

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RIS Citation

ID  - gr06100c
AU  - Green, S.
PY  - 1985
TI  - Calculation of pressure-broadened linewidths for CO in Ar
JA  - J. Quant. Spectrosc. Radiat. Transfer
JO  - Journal of Quantitative Spectroscopy and Radiative Transfer
VL  - 33
SP  - 299
EP  - 305
DO  - 10.1016/0022-4073(85)90191-8
ER  -

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