After the
atomic absorption photon energy to move from the low-energy-step
process of high-energy bands, namely, light absorption process. When
the incident light sub-atomic transition energy is equal to the
difference between energy levels, this photon is absorbed greater
chance, so this process as resonance absorption. When an atom absorbs
photons in the high-energy band, then have the opportunity to move to
low-energy bands from the high-energy step, and release the energy
difference of the photons form a contrast, which is of atomic radiation
emitting mechanism. |