- #1
zweiling
- 4
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I mean the photoelectric effect of the hydrogen atom.
It is weird. By the Fermi golden rule, the transition or absorption rate is proportional to the density of the final states. At threshold, the electron has zero momentum and thus zero density of state. Therefore, the absorption coefficient should be zero at the threshold. Where does this argument go wrong?
It is weird. By the Fermi golden rule, the transition or absorption rate is proportional to the density of the final states. At threshold, the electron has zero momentum and thus zero density of state. Therefore, the absorption coefficient should be zero at the threshold. Where does this argument go wrong?