Statistics – Applications
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1058..297g&link_type=abstract
SPECTRAL LINE SHAPES: Volume 15-19th International Conference on Spectral Line Shapes. AIP Conference Proceedings, Volume 1058,
Statistics
Applications
Interatomic And Intermolecular Potentials And Forces, Potential Energy Surfaces For Collisions, Line Shapes, Widths, And Shifts, Scattering Of Acoustic Waves
Scientific paper
Recent advances in calculations of collision-induced absorption- and Raman-spectra in pure diatomic gases are presented. An extensive calculation of H2-H2 absorption from 40 K to 400 K has provided improved understanding of the atmosphere of Uranus. A highly advanced close-coupling calculation of H2-H2 light scattering has verified that the line shapes are affected by interference between the permanent H2 and the H2-H2 interaction-induced polarizabilities. A few directions that the research in astrophysical applications of collision-induced absorption is taking are also described. For instance, H2-H2 dipole and potential surfaces for vibrations higher than v = 1 are currently being developed to enable simulations of collision-induced absorption at temperatures relevant for white dwarf atmospheres. For low temperature N2-N2 absorption there is unresolved discrepancy between measurement and simulation. A possible solution to this puzzle is suggested.
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