The number of
nuclear decays occurring in a given quantity of material in a small time interval, divided by that time interval. Often, this term is referred to as
absolute activity. Symbol
.
Synonymous with
disintegration rate or
decay rate.
Source:
PAC, 1994, 66, 2513
(Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994))
on page 2515
PAC, 1996, 68, 957
(Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996))
on page 960
