Experimental and theoretical studies of the quenching of Li(3p,4p) by N2 |
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Authors: | Komaragiri Vivek McCarter Benjamin Bililign Solomon Hagebaum-Reignier Denis Ledentu Vincent Jeung Gwang-Hi |
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Institution: | Department of Physics, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA. |
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Abstract: | Quenching mechanisms of the Li3p and Li4p states in collision with the nitrogen molecule are studied by laser-induced fluorescence spectroscopy and by a quantum chemical calculation. The Li3p state is observed to be efficiently quenched to the Li3s state detected as intense 3s-->2p emission. The Li4p state is efficiently quenched to the Li4s and Li3d states detected as 4s-2p and 3d-2p emissions, respectively. The potential-energy surfaces for the Li(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 Li2p+N2. |
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