Open AccessКвантовая модель диполь-индуцированный диполь и влияние инертного окружения на интенсивность ИК поглощения
Author(s) -
А.П. Коузов,
Н.И. Егорова,
А.Н. Добротворская
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2019.08.48031.70-19
Subject(s) - polarizability , dipole , diagrammatic reasoning , isotropy , infrared , interaction model , intensity (physics) , field (mathematics) , physics , absorption (acoustics) , chemistry , computational physics , quantum mechanics , optics , mathematics , molecule , psychology , pedagogy , linguistics , philosophy , pure mathematics
Based on the diagrammatic techniques, a theory of the imaginary part of the isotropic polarizability induced by the dipole-dipole interactions between isotropically polarizable particles is elaborated. A classification of single infrared resonances corresponding to cases of the allowed and interaction-induced absorption bands is proposed. The Dipole-Induced-Dipole (DID) diagrammatic terms causing the allowed intensity variations via the reaction-field effect are analytically summed up. The thus-derived rigorous results are in conflict with the semi-empirical Onsager-Bottcher model. For the simplest reference systems (cryogenic solutions of HCl and HBr), our numerical estimations demonstrate the reaction-field contributions to observed intensity variations of vibrational bands to be weak and to become even weaker with a growth of the solvent particle dimensions that suggests the inadequacy of the DID and Onsager-Bottcher models to experimental data.