It is clear that Ef < Ea
Therefore lf > la
|
The figure shows a ground state and an excited electronic
state with a few vibrational levels.
It is clear that Ef < Ea Therefore lf > la |
The metastable state is always significantly lower in energy than the
excited state so Ep < Ef
Therefore lp >
lf
In order of increasing wavelength: la, lf, lp