Abstract
Simple ways of modeling the gas-phase potentials of rare gas Ne, Ar, Kr, and Xe dimers are proposed to describe solid matrices and atomic and molecular systems isolated in them. The fitting parameters for Ne, Ar, Kr, and Xe, based on the reproduction of the lattice structural parameter and energy of atomization, were calculated. The resulting effective solid-state potentials of inert gas dimers were applied to the problem of modeling the sodium atom captured by argon matrix. The effect of solid-state modification on the geometries of stable trapping sites and on the shifts and shapes of the calculated electronic absorption spectrum of the Na@Ar system was investigated. It is shown that using the effective solid-state potentials can improve the agreement with experimental values.
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ACKNOWLEDGMENTS
The authors thank G.K. Ozerov (PhD in physics and mathematics) for his helpful comments on our results. This work was supported by the Russian Science Foundation, grant no. 17-13-01466. The shapes of the electronic absorption spectra were calculated using the supercomputer resources of Moscow State University’s Scientific Research Center.
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Bezrukov, D.S., Kleshchina, N.N., Kalinina, I.S. et al. Empirically Modified Potentials of Interaction between Rare Gases for Matrix Isolation Problems. Russ. J. Phys. Chem. 93, 1505–1512 (2019). https://doi.org/10.1134/S003602441908003X
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DOI: https://doi.org/10.1134/S003602441908003X