Calculated isotropic Raman spectra from interacting H2-rare-gas pairs

22nd International Conference on Spectral Line Shapes

Gustafsson, M.^1 ; Glaz, W.^2 ; Bancewicz, T.^2 ; Godet, J.-L.^3 ; Maroulis, G.^4 ; Haskapoulos, A.^4

Division of Materials Science, Department of Engineering Science and Mathematics, Lule University of Technology, Luleå

SE-97187, Sweden^1

Nonlinear Optics Division, Adam Mickiewicz University, Pozna, Poland^2

Laboratoire de Photonique d'Angers, Université d'Angers, France^3

Department of Chemistry, University of Patras, Greece^4

关键词: Anisotropic potential;    Close-coupling approach;    Interaction-induced spectra;    Isotropic interaction;    Polarizabilities;    Quantum mechanical;    Raman intensities;    Theoretical study;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012027/pdf
DOI  :  10.1088/1742-6596/548/1/012027

来源: IOP

【 摘 要 】

We report on a theoretical study of the H2-He and H2-Ar pair trace-polarizability and the corresponding isotropic Raman spectra. The conventional quantum mechanical approach for calculations of interaction-induced spectra, which is based on an isotropic interaction potential, is employed. This is compared with a close-coupling approach, which allows for inclusion of the full, anisotropic potential. It is established that the anisotropy of the potential plays a minor role for these spectra. The computed isotropic collision-induced Raman intensity, which is due to dissimilar pairs in H2-He and H2-Ar gas mixtures, is comparable to the intensities due to similar pairs (H2-H2, He-He, and Ar-Ar), which have been studied previously.