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Article Dans Une Revue Journal of Chemical Physics Année : 2005

Experimental and theoretical studies of the quenching of Li (3p , 4p) by N2

Vivek Komaragiri
  • Fonction : Auteur
Benjamin Mccarter
  • Fonction : Auteur
Solomon Bililign
  • Fonction : Auteur

Résumé

Quenching mechanisms of the Li͑(3p) and Li͑(4p) states in collision with the nitrogen molecule are studied by laser-induced fluorescence spectroscopy and by a quantum chemical calculation. The Li͑(3p) state is observed to be efficiently quenched to the Li͑(3s) state detected as intense 3s → 2p emission. The Li͑(4p) state is efficiently quenched to the Li͑(4s) and Li͑(3d) states detected as 4s-2p and 3d-2p emissions, respectively. The potential-energy surfaces for the Li͑(2s-4p)N2 states show a large number of conical intersections and avoided crossings resulting from the couplings between the ionic (Li^+ N2^−) and covalent configurations. There are a large number of stable excited states, and we give here the spectroscopic constants for the lowest two stable isomers correlating to Li͑(2p)+N2.
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Dates et versions

hal-03561384 , version 1 (08-02-2022)

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Vivek Komaragiri, Benjamin Mccarter, Solomon Bililign, Denis Hagebaum-Reignier, Vincent Ledentu, et al.. Experimental and theoretical studies of the quenching of Li (3p , 4p) by N2. Journal of Chemical Physics, 2005, ⟨10.1063/1.1993588⟩. ⟨hal-03561384⟩

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