IEVref:881-04-46ID:
Language:enStatus: Standard
Term: radioactive half-life
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Symbol: T 1 2 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaadsfadaWgaaqcba waaSWaaSqaaKGaGfaacaaIXaaabaGaaGOmaaaaaKqaahqaaaaa@397C@
Definition: for a single radioactive decay process, the time ( T 1 2 ) MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaGaamivamaaBaaajeaybaWcdaWcbaqccawaaiaaigdaaeaacaaIYaaaaaqcbaCabaaakiaawIcacaGLPaaaaaa@3B0D@ in which the activity of the radionuclide is reduced to half of its initial value by that process

NOTE – The radioactive half-life is related to the decay constant by:

T 1 2 = ln2 λ 0,693 λ MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaadsfadaWgaaqcba waaSWaaSqaaKGaGfaacaaIXaaabaGaaGOmaaaaaKqaahqaaOGaeyyp a0ZaaSaaaeaaciGGSbGaaiOBaiaaikdaaeaacqaH7oaBaaGaeS4qIS ZaaSaaaeaacaaIWaGaaiilaiaaiAdacaaI5aGaaG4maaqaaiabeU7a Sbaaaaa@458F@

λ = decay constant


Publication date:1983-01
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