What is the significance of Franck-Condon principle explain?

The Franck-Condon Principle describes the intensities of vibronic transitions, or the absorption or emission of a photon. It states that when a molecule is undergoing an electronic transition, such as ionization, the nuclear configuration of the molecule experiences no significant change.

What is Condon Morse diagram?

1. Using the Condon-Morse diagram, explain the phenomena of surface energy and surface tension. Surface tension is temperature-dependent. This means that dampness in walls would rise higher in cooler weather.

What is a vibronic state?

Vibronic progression means that there is a coupling to vibrational modes in a polymer or oligomer resulting in excitation from the ground state to the excited state, or emission from the excited state down to the ground state.

Why the electronic transition may be presented by a vertical line?

The energy of the absorbed photon is always larger than the energy of the emitted photon. Since absorption and emission are very fast processes, the internuclear distance does not change, and thus the transitions are represented as vertical lines.

What is the Franck Condon principle in quantum chemistry?

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.

How does the Franck Condon principle explain vibronic transitions?

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.

Which is the first integral of the Franck-Condon principle?

The first integral is the vibrational overlap integral, also called the Franck-Condon factor. The remaining two integrals contributing to the probability amplitude determine the electronic spatial and spin selection rules.

How is the Franck-Condon principle based on Born Oppenheimer?

The Franck-Condon principle is based on the Born-Oppenheimer approximation, which allows separation of the electronic q and nuclear Q wave functions given the total wavefunction. | ψtotal(Q, q) = | ψnuc(Q)⟩ψel(Q; q)⟩