Re: 89Sr

[Franz Schoenhofer <schoenho@via.at>]

At 12:59 10.08.2000 -0500, you wrote:
>
>
>My regards to Franz:
>
>It has been a few decades since I ran a radiochemical lab at Livermore,
but 89Sr
>does have a gamma (909 kev in the 10E-4 decays that go to 89mY) and a 51-day
>half life.  I sort of dimly remember counting it.   


Yes, you are right. But I suppose you counted it by gamma-spectrometry in
fresh high-active waste.... With this extremely low-yield gamma ray and the
very low Ge-detector efficiency the only practical way to measure Sr-89 is
the measurement of the beta rays, preferentially by liquid scintillation
spectrometry. 

Franz


Franz Schoenhofer
Habicherg. 31/7
A-1160 Vienna
Austria
Tel.: +43-1-495 53 08
Fax.: same number
mobile phone: +43-664-338 0 333
e-mail: schoenho@via.at


Please note my new telephone number at my office!

Office:
Ministerialrat Dr. Franz Schoenhofer
Federal Ministry of Agriculture, Forestry, Environment and Water Management
Radiation Protection Department (BMLFUW I/8 U)
Radetzkystr. 2
A-1031 Vienna
AUSTRIA

phone: -43-1-71100-4458
fax: -43-1-7122331

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