IEVref:395-01-13ID:
Language:enStatus: Standard
Term: mean life
Synonym1:
Synonym2:
Synonym3:
Symbol: τ
Definition: for a radionuclide, time elapsed when the number of atoms or atomic nuclei in the considered state has decreased by a factor 1/e from its initial value

Note 1 to entry: For a radionuclide the radioactive mean life is the reciprocal of the decay constant λ, (τ = 1/ λ).

Note 2 to entry: This entry was numbered 393-14-20 in IEC 60050-393:2003.


Publication date:2014-03
Source
Replaces:
Internal notes:2015-05-20: Link added to <a href=IEV113-05-21>atomic nuclei</a>. JGO
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5: