[ RadSafe ] IBIS Sr-90 source construction

Brad Keck bradkeck at mac.com
Tue May 24 20:26:09 CDT 2016

Hi Brian,

I believe these are electroplated sources, so at the surface of the metal (stainless steel usually in sources) a thin coat of strontium will be reduced to it’s metallic form.

It is important of course that the strontium “plate” be very thin so that beta emissions are unshielded in the direction of the detector….  

Hope this helps..


> On May 24, 2016, at 5:04 PM, Rees, Brian G <brees at lanl.gov> wrote:
> Does anybody on the list know the physical form of Sr-90 sources used in helicopter blade pressure indicators?
> Specifically, is it strontium titanate, or some other material with a low solubility?
> Thanks,
> Brian Rees
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