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Shivetya on Sept 4, 2015 | parent | context | favorite | on: The Mystery of Devil's Kettle Falls

are there any short life radioactive materials that can be used?

ars on Sept 4, 2015 [–]

Iodine-123 maybe, but you'd have to make it on the spot.

The half-life is 13.22 hours, and it makes some detectable gamma rays.

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