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Unformatted text preview: Phosphorescence is the electronic de-excitation by emission of photons involving a
transition from a higher energy triplet state to a lower energy singlet state. c) Resonance fluorescence is an electronic de-excitation in which the emitted radiation
has the same frequency as that of the absorbed radiation. d) A singlet state is an electronic state in which all of the electron spins are paired. e) A triplet state is an electronic state in which electron spins become unpaired. f) Vibrational relaxation is the rapid loss of excess vibrational energy following
electronic excitation. g) Internal c...
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- Fall '08