Theory of collision-induced translation-rotation spectra: H2-He

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Issue Date
1984-02-01Author
Birnbaum, George
Chu, Shih-I
Dalgarno, A.
Frommhold, Lothar
Wright, E. L.
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
An adiabatic quantal theory of spectral line shapes in collision-induced absorption and emission is presented which incorporates the induced translation-rotation and translation-vibration spectra. The generalization to account for the anisotropy of the scattering potential is given. Calculations are carried out of the collision-induced absorption spectra of He in collisions with H2 with ab initio electric dipole functions and realistic potentials. The anisotropy of the interaction potential is small and is not included in the calculations. The predicted spectra are in satisfactory agreement with experimental data though some deviations occur which may be significant. The rotational line shapes have exponential wings and are not Lorentzian. The connection between the quantal and classical theories is written out explicitly for the isotropic overlap induction.
Description
This is the published version, also available here: http://dx.doi.org/10.1103/PhysRevA.29.595.
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Citation
Birnbaum, George., Chu, Shih-I., Dalgarno, A., Frommhold, Lothar., Wright, E. L. "Theory of collision-induced translation-rotation spectra: H2-He." Phys. Rev. A 29, 595 – Published 1 February 1984. http://dx.doi.org/10.1103/PhysRevA.29.595.
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