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Old 18-July-2007, 02:23 PM
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777 geek 777 geek is offline
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Default Gamma ray shield

A few weeks ago, we had a discussion about using strontium-90 for illumination by Cerenkov radiation in a swimming pool (the concept has since been expanded to ponds and water features). I've blogged about it too.

The real show stopper to the operation was the emission of 2 MeV gamma photons from yttrium-90, the decay product of strontium-90. I'm talking with a friend now about it and we started thinking about more innovative solution to gamma ray shielding.

We have a single wavelength of gamma to worry about, 5.7e-13m. What is the possibility of blocking this by making use of destructive interference?
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