Non radiative transition probabilities in the statistical limit

Abraham Nitzan*, Joshua Jortner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this paper we derive a general computational scheme for the calculation of the non radiative decay probability of a polyatomic molecule in the statistical limit. Within the framework of the Harmonic Approximation the relaxation rate of any polyatomic molecule can be expressed in terms of an infinite sum where each term consists of a medium distribution function and an intramolecular term. In the statistical limit the medium induced vibrational relaxation widths do not affect the non radiative decay characteristics. Numerical calculations are reported for the T1→S0 intersystem crossing in the benzene molecule.

Original languageEnglish
Pages (from-to)217-229
Number of pages13
JournalTheoretica Chimica Acta
Issue number3
StatePublished - Sep 1973


  • Electronic relaxation
  • Energy transfer
  • Radiationless transitions


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