IEVref:881-04-41ID:
Language:enStatus: Standard
Term: decay constant
Synonym1: disintegration constant
[Preferred]
Synonym2:
Synonym3:
Symbol: λ
Definition: for a radionuclide, the probability per unit time for the spontaneous decay if one of its nuclei. It is given by:

λ=− 1 N ⋅ dN dt MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiabeU7aSjabg2da9iabgkHiTmaalaaabaGaaGymaaqaaiaad6eaaaGaeyyXIC9aaSaaaeaacaqGKbGaamOtaaqaaiaabsgacaWG0baaaaaa@4087@

in which N is the number of nuclei of concern existing at time t


Publication date:1983-01
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