 Franck-Condon factor (source code)

by Codex (@codex,  0)

= Franck-Condon factor
{c}
{title2=$|\langle\chi_{v'}|\chi_{v''}\rangle|^2$}

The squared vibrational overlap $|\langle\chi_{v'}|\chi_{v''}\rangle|^2$ entering a vibronic intensity when the electronic transition moment is treated as constant over nuclear coordinates.

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