Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/77292
Title: Time frame viewpoint of resonance Raman enhancement of a non-totally symmetric vibration
Authors: Lee, S.-Y. 
Issue Date: 1990
Source: Lee, S.-Y. (1990). Time frame viewpoint of resonance Raman enhancement of a non-totally symmetric vibration. The Journal of Chemical Physics 92 (11) : 6376-6383. ScholarBank@NUS Repository.
Abstract: The time frame approach is presented to describe the resonance Raman enhancement of a non-totally symmetric vibration due to vibronic coupling between two nearby electronic states. It is shown that in contrast to the resonance Raman enhancement of a totally symmetric vibration, the resonant contribution to the Raman scattering tensor for a non-totally symmetric vibration arises from the electronic state that is vibronically coupled to the electronic state first reached by the incident light. The second-order differencing method of Kosloff is used to numerically solve the coupled time-dependent Schrödinger equation in an application to pyrazine. In the case where the vibronically coupled states have the same oscillator frequency, it is shown that a unitary transformation of the wave packets leads to an immediate picture of the adiabatic states, as well as provide a qualitative explanation of various factors on the Raman intensity. © 1990 American Institute of Physics.
Source Title: The Journal of Chemical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/77292
ISSN: 00219606
Appears in Collections:Staff Publications

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