Chemistry web site & plutonium

[Michael Stabin <stabin@npd.ufpe.br>]

Bjorn Cedervall wrote:

> Just searched for the best estimate for the half-life of plutonium 239 -
is
> it 24300 years (I have seen this commonly quoted), 24100 years, or 24065
> years (ICRP, 1983) or yet some other value?

I just ran a progam that I recently downloaded from the Brookhaven site,
with decay data supposedly updated to 1999, and it gave 24110 yr.  After
this, it gives the value 30, which I would interpret to be an uncertainty,
probably one standard deviation, but I couldn't verify that quickly.


Michael Stabin
Departamento de Energia Nuclear/UFPE
Av. Prof. Luiz Freire, 1000 - Cidade Universitaria
CEP 50740 - 540
Recife - PE
Brazil
Phone 55-81-271-8251 or 8252 or 8253
Fax  55-81-271-8250
E-mail stabin@npd.ufpe.br



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