radiative lifetime, \(\tau_{0}\)

Also contains definition of: natural lifetime
https://doi.org/10.1351/goldbook.R05064
@L03515-1@ of an excited molecular entity in the absence of radiationless transitions. The reciprocal of the first-order @O04322@ for the radiative step, or the reciprocal of the sum of these rate constants if there is more than one such step. The equivalent term, natural lifetime, is discouraged.
Notes:
  1. Approximate expressions exist relating \(\tau_{0}\) to the @O04339@ of the emitting transition.
  2. The subscript \(0\) is used in this definition, whereas the superscript \(0\) is used to indicate a non-quenched @L03515-2@ in the Stern-Volmer kinetic relationships.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 411 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014