Absorption Spectra of Excitons in Alkali Halides in the Vacuum-Ultraviolet Region
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概要
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On the basis of the localized excitation model, characteristic absorption spectra of excitons in alkali halides in the range of photon energy around 20 eV corresponding to the np^6&roar;np^5n's and np^6&roar;np^5nd excitations of alkali ions are theoretically treated by using methods developed in the ligand field theory. By assuming reasonable values of Slater integrals, the spin-orbit interaction constant and the ligand-field strength, the observed positions including their chemical shifts and the relative intensities of five absorption peaks called A, B, C, D and E in RbX(X=F, Cl, Br, I) are explained satisfactorily. In constant to the case of the band picture, the excited d-orbital responsible for the absorption of RbX is shown to be mainly of the dγ character, although mixing of the p^5s, p^5dε and p^5dγ configurations is appreciable.
- 社団法人日本物理学会の論文
- 1973-03-05
著者
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Sugano Satoru
Institute For Solid Physics University Of Tokyo
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SATOKO Chikatoshi
Institute for Molecular Science
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