RE: Gamma Spec

[Dave Brown <david.brown@nist.gov>]

>

>You count a sample on a HPGe for a certain amount of time, but it doesn't

>meet a specific radionuclide LLD.  You calculate the new time where the LLD

>will be met.  Can you, instead of recounting the sample for the entire

>duration of thenew calculated count time, start the count on top of the

>original spectrum and just count for the difference in time between the

>original count time and thecalculated new time?

>

>Radsafers,

>As long as the background has not changed, and the sample has not changed

>(as for example significant decay of radionuclides in the sample), you

>should be able to add the two spectra to give a total spectrum. You can then

>do the normal statistical evaluations on the final spectrum.

>

>Wes (NJ)

>

I agree with the statement above from Wes.  At least it's how I would do it.

Regards,

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