Sr-90 Source Activity/Geometry

["William F Miller" <MILLERWF@inel.gov>]

We recently purchased a Sr-90 source from Amersham.
The certificate of calibration lists the activity as 802 Bq, which is for
the Sr-90 only.
Our crew is having a discussion about what the activity, in dpm, would be
for 2 pi and 4 pi geometry.
Also, if you are calibrating a CAM with this source, would you use the 2 pi
or 4 pi dpm to determine efficiency?
Anyone care to comment?

Bill Miller
INEEL


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