Franck-Condon Principle · Vertical Transitions
unseel.com · frozen nuclei · vibrational overlap · vibronic bands
Timescale ratio ~1000×
Phase start
operation
Ground state X (Re≈0.267 nm)
Excited state B (Re≈0.303 nm)
Vertical transition (R fixed)
Franck-Condon factors
Unseel.com · The Franck-Condon Principle