average life

in nuclear chemistry
https://doi.org/10.1351/goldbook.A00541
Defined for an @[email protected] or nuclear system in a specified state. For an exponentially decaying system, it is the average time for the number of atoms or @[email protected] in a specified state to decrease by a factor e. Synonymous with @[email protected]
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1536 [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