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Electronic transitions
Electronic transitions

... v˜P (J)  S(v 1,J 1)  S(v,J)  v˜  2BJ o ...
Abstract
Abstract

Lecture 5: Molecular Astrophysics
Lecture 5: Molecular Astrophysics

... Biophysics: Imaging  Spectroscopy • Radiation absorption and emission highly efficient at ...
Physical chemistry exam, quiz, homework with Solution
Physical chemistry exam, quiz, homework with Solution

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Spectroscopy

Rotation ,vibration, electronic spectra
Rotation ,vibration, electronic spectra

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Molecular Term Symbols

Electronic Spectroscopy Application of Group Theory
Electronic Spectroscopy Application of Group Theory

METO 621
METO 621

... • Consideration of things such as the need to conserve quantum spin and orbital angular momentum indicate if the transition is possible. ...
UV-Vis (electronic) spectroscopy
UV-Vis (electronic) spectroscopy

... Since the nuclei do not move during the excitation, the internuclear distances remain constant and “the most probable component of an electronic transition involves only the vertical transitions”. ...
UV-Vis (electronic) spectroscopy
UV-Vis (electronic) spectroscopy

UV-Vis spectroscopy
UV-Vis spectroscopy

... Since the nuclei do not move during the excitation, the internuclear distances remain constant and “the most probable component of an electronic transition involves only the vertical transitions”. ...
Rotational and Vibrational Levels of Molecules
Rotational and Vibrational Levels of Molecules

Rotational and Vibrational Spectra
Rotational and Vibrational Spectra

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Lesson7

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10. Molecules and Solids

10.40 Thermodynamics  Fall 2003
10.40 Thermodynamics Fall 2003

... 1. Compute U/(RT) of a mole of diatomic ideal gas molecules treating the vibrational mode classically. Assume that the vibrational frequency is 1013 s-1, and take the reference state as E = 0 when the system is in its ground state (degeneracy of 1 and no important excited electronic states). In a fe ...
10. Molecules and Solids
10. Molecules and Solids

... Vibrational Motion: A Simple Harmonic Oscillator The Schrödinger Equation can be separated into equations for the positions of the electrons and those of the nuclei. The simple harmonic oscillator accurately describes the nuclear positions of a diatomic molecule, as well as more complex molecules. ...
Quantum Mechanical Simulations of Electronic Excited States of
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Vibrational Transition Moments and Dipole Derivatives
Vibrational Transition Moments and Dipole Derivatives

< 1 ... 106 107 108 109 110

Franck–Condon principle



The Franck–Condon principle is a rule in spectroscopy and quantum chemistry that explains the intensity of vibronic transitions. Vibronic transitions are the simultaneous changes in electronic and vibrational energy levels of a molecule due to the absorption or emission of a photon of the appropriate energy. The principle states that during an electronic transition, a change from one vibrational energy level to another will be more likely to happen if the two vibrational wave functions overlap more significantly.
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