Theoretical Study of Optical Absorption Curves of Molecules. II : Effect of the Vibrational Mode-Mode Interaction in the Excited State

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概要

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• We investigate how the second-order mode-mode interaction in the excited state affects an intensity distribution of optical absorption lines, by calculating the Franck-Condon factor exactly. As a result, we find that the mode-mode interaction affects a general form of the intensity distribution of optical absorption spectra mainly through displacement parameters in the excited state. Furthermore, we find that the line width of each absorption line is affected very much by the mode-mode interaction. In this study fourteen species of elementary transition operators which annihilate, create and transfer some vibrational quanta in and between two modes are defined. We find that coefficients in the formula of the Franck-Condon factor have physical meanings of transition-probability amplitudes corresponding to elementary transition operators. An interference phenomenon in the transition is discussed.

• 理論物理学刊行会の論文
• 1973-07-25

著者

• Kakitani Toshiaki

  Research Institute For Fundamental Physics Kyoto University

関連論文

• Analysis of the Intensity Distribution in the near Ultraviolet Absorption Spectrum of Benzene
• Theoretical Study of Optical Absorption Curves of Molecules. IV : Improvement of Self-Consistent HMO Method Using a New Resonance Integral and Investigation of a Relation between Bond Alternation and Wavelength of Optical Absorption
• Theoretical Study of Optical Absorption Curves of Molecules. II : Effect of the Vibrational Mode-Mode Interaction in the Excited State

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