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Infrared absorption by H2-Ar collisional complexes and the anisotropy of the intermolecular interaction potential
Department of Chemistry and Biochemistry, University of Colorado, Boulder.ORCID-id: 0000-0002-7629-0169
University of Texas, Physics Department.
2006 (Engelska)Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 74, artikel-id 54703Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

H2-Ar scattering processes in the presence of a weak photon field are considered. Calculations are based on an accurate ab initio interaction-induced electric dipole surface and an anisotropic intermolecular potential energy surface. The close-coupled scheme of integrating the Schrödinger equation is employed to calculate the rototranslational absorption spectrum of H2-Ar pairs in the far-infrared region of the electromagnetic spectrum. The results are compared with previous work where the weak anisotropy of the intermolecular interaction potential was suppressed. Under the conditions considered, accounting for the anisotropy modifies the rototranslational absorption spectrum discernibly, but only at some frequency bands where the corrections are negative, typically below 10%.

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2006. Vol. 74, artikel-id 54703
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URN: urn:nbn:se:ltu:diva-14326DOI: 10.1103/PhysRevA.74.054703Lokalt ID: dad520f8-a7b1-4fe5-8675-c647ec8954f9OAI: oai:DiVA.org:ltu-14326DiVA, id: diva2:987281
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Upprättat; 2006; 20141019 (maggus)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

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