STABILITY OF NEGATIVE IONS NEAR THE SURFACE OF A SOLID
Zhukhovitskii D.I.

Поступила в редакцию: 4 Февраля 2003

PACS: 34.50.Dy, 32.10.Hq, 31.15.Fx

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Stationary states of molecular negative ions (anions) near the surface of a solid are investigated. The lone electron is assumed to interact with a diatomic molecule and the surface of the solid. The energies of electron levels are determined by solving the 2D Schrodinger equation. It is shown that its stable solutions exist at distances from the surface greater than some critical distance, otherwise the electron is detached from the anion. In the case of attraction between the electron and the solid, the interaction potential between the anion and the solid appears to have the Lennard-Jones form and the ion is separated from the surface by some equilibrium distance.