Statistical theory of a solvated electron in an electrolyte
| Autor: | G. N. Chuev |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Journal of Experimental and Theoretical Physics. 88:807-814 |
| ISSN: | 1090-6509 1063-7761 |
| Popis: | The behavior of a solvated electron in an electrolyte is investigated. The formalism of the theory is based on variational estimation of path integrals. It reduces the problem to the investigation of the self-consistent mean field produced by the ions and the electron. Mayer cluster expansions make it possible to take account of the short-range interactions and to find expressions for the effective potential of the electron and the electron-ion and electron-neutral atom correlation functions as a function of the macro-and microscopic parameters of electrolytes. In the limit of high ion densities the behavior of the electron is determined solely by the Coulomb interaction, which results in the formation of a polaron state. This state of the electron is virtually independent of the thermodynamic parameters of the electrolyte. In the opposite limit of low ion densities the electron forms a cavity state. The presence of ions results in additional localization of the electron and is manifested experimentally as a shift of the absorption band in the direction of high energies. The estimated shift for a hydrated electron agrees with the experimental data. |
| Databáze: | OpenAIRE |
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