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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2020

H-2-He collisions: Ab initio theory meets cavity-enhanced spectra

Franck Thibault
Roman Ciurylo
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Résumé

Fully quantum ab initio calculations of the collision-induced shapes of two rovibrational H-2 lines perturbed by He provide an unprecedented subpercent agreement with ultra-accurate cavity-enhanced measurements. This level of consistency between theory and experiment hinges on a highly accurate potential energy surface and a realistic treatment of the velocity changing and dephasing collisions. In addition to the fundamental importance, these results show that ab initio calculations can provide reference data for spectroscopic studies of planet atmospheres at the required accuracy level and can be used to populate spectroscopic line-by-line databases.
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Dates et versions

hal-02886121 , version 1 (09-07-2020)

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Michal Slowinski, Franck Thibault, Yan Tan, Jin Wang, Agnès Pernet-Liu, et al.. H-2-He collisions: Ab initio theory meets cavity-enhanced spectra. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2020, 101 (5), pp.052705. ⟨10.1103/PhysRevA.101.052705⟩. ⟨hal-02886121⟩
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