Publication Abstracts

Green and Chapman 1983

Green, S., and S. Chapman, 1983: Accuracy of the IOS approximation for highly inelastic R-T collisional energy transfer. Chem. Phys. Lett., 98, 467-471.

Rate constants for rotational excitation of CO by collisions with He atoms computed within the infinite order sudden (IOS) approximation are compared with accurate quantum (coupled-states) and classical trajectory values. Taking the IOS energy as the initial kinetic energy for upward, 0→J, transitions is found to overestimate the rates, especially for higher J (larger inelasticity). Taking the IOS energy as the initial energy for downward, J→0, transitions underestimates the rates by a comparable amount. The geometric average of IOS rates computed in these two ways is found to provide accurate values.

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BibTeX Citation

@article{gr06400f,
  author={Green, S. and Chapman, S.},
  title={Accuracy of the IOS approximation for highly inelastic R-T collisional energy transfer},
  year={1983},
  journal={Chem. Phys. Lett.},
  volume={98},
  pages={467--471},
}

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RIS Citation

TY  - JOUR
ID  - gr06400f
AU  - Green, S.
AU  - Chapman, S.
PY  - 1983
TI  - Accuracy of the IOS approximation for highly inelastic R-T collisional energy transfer
JA  - Chem. Phys. Lett.
VL  - 98
SP  - 467
EP  - 471
ER  -

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