Collision-induced absorption by H2-He pairs in the fundamental band - Rotational states dependence

Details Collision-induced absorption by H2-He pairs in the fundamental band - Rotational states dependence Collision-induced absorption by H2-He pairs in the fundamental band - Rotational states dependence

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrva..41..264b&link_type=abstract

Physical Review A - Atomic, Molecular, and Optical Physics, 3rd Series (ISSN 0556-2791), vol. 41, Jan. 1, 1990, p. 264-270.

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19

Absorption Spectra, Atomic Collisions, Helium Atoms, Hydrogen, Molecular Collisions, Dipole Moments, Planetary Atmospheres, Rotational Spectra, Wave Functions, Infrared Spectra, Line And Band Widths, Shapes, And Shifts, Other Topics In Atomic And Molecular Collision Processes And Interactions

Scientific paper

Detailed knowledge of the spectra of collisional molecular complexes is essential for the study of planetary atmospheres, especially of those of the outer planets, which are composed of nonpolar molecules that have no allowed dipole transitions in the infrared. In this paper, the dependence of radial induced-dipole transition moments and the associated spectra on the rotational states involved is examined. Whereas the neglect of the rotational quantum numbers j, j-prime of the initial and final state of H2 is justified for the purely rototranslational spectra of H2-He, significant variations with j, j-prime of the radial induced-dipole transition elements and the induced spectra for the fundamental band of H2 are found. Similar effects are expected for other molecular bands and systems of interest, especially those involving hydrogen molecules.

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