Zero-range potential model for the description of atomic and molecular systems in a laser field
| Autor: | PS Krstic, RK Janev, DB Miloevic |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Physics
chemistry.chemical_classification business.industry Diatomic molecule Atomic and Molecular Physics and Optics Ion symbols.namesake Optics chemistry Excited state Ionization Bound state symbols Physics::Atomic Physics Atomic physics business Hamiltonian (quantum mechanics) Wave function Inorganic compound |
| Zdroj: | Physical review. A, Atomic, molecular, and optical physics. 44(5) |
| ISSN: | 1050-2947 |
| Popis: | The method of zero-range potential is used to model negative atomic and quasimolecular ions in a circularly polarized laser field. The range of the laser-field parameters is extended in comparison with the previous calculations of the complex quasienergies of an atomic particle. A closed-form expression that defines the adiabatic electronic complex quasienergies of a two-state quasimolecular system is derived and solved numerically. Both laser-induced widths and shifts of the terms are discussed for a wide region of the laser-field parameters and internuclear distances, using ${\mathrm{H}}_{2}^{\mathrm{\ensuremath{-}}}$ and ${\mathrm{OH}}^{\mathrm{\ensuremath{-}}}$ ions as examples. The effect of suppression of the ionization rate of the excited state of a negative quasimolecular ion at small internuclear distances due to the presence of a laser field, as well as deepening of the ground-term potential well, was found. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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