Publication Abstracts

Green 1985

Green, S., 1985: Calculation of pressure broadening parameters for the CO-He system at low temperatures. J. Chem. Phys., 82, 4548-4550, doi:10.1063/1.448710.

Theoretical pressure broadening parameters were computed for the 0-1 and 1-2 rotational transitions of CO in He at very low temperatures and compared with the recent experimental measurements at 4.2 K. The interaction potential was taken from extensive SCF-CI calculations, molecular collision dynamics were described by essentially exact converged close coupling calculations, and pressure broadening cross sections were obtained from the collisional S matrices within the accurate Fano-Ben Raven framework. Resonances at low collision energies give rise to an increase in the thermally averaged cross sections at low temperatures. Although previous calculations for this system at higher temperatures (77-300 K) were in good accord with experiment, at 4.2 K predicted values are about two times larger than experiment; possible sources of this discrepancy are discussed.

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BibTeX Citation

@article{gr08100v,
  author={Green, S.},
  title={Calculation of pressure broadening parameters for the CO-He system at low temperatures},
  year={1985},
  journal={J. Chem. Phys.},
  volume={82},
  pages={4548--4550},
  doi={10.1063/1.448710},
}

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RIS Citation

TY  - JOUR
ID  - gr08100v
AU  - Green, S.
PY  - 1985
TI  - Calculation of pressure broadening parameters for the CO-He system at low temperatures
JA  - J. Chem. Phys.
VL  - 82
SP  - 4548
EP  - 4550
DO  - 10.1063/1.448710
ER  -

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