Why do I get readings from my radiation meter with magnetized pieces? What causes those radiation readings in my radiation meter (See the linked video)? Metal pieces were magnetized.
Used radiation detector is RADEX RD1503. "Radiation" is not generated if the tube has been wrapped inside an aluminium foil. Should induction occur through thin aluminium foil? At least magnet holds through that foil and plastic tube.
 A: It's very unlikely, but not impossible, that the metal stock your magnets were made from was contaminated with a radioactive isotope. I mention this because I once encountered radioactive re-bar - it was only noticed because it was brought into a lab with radiation detectors at the door. Eventually it was traced back to contamination (radioactive cobalt) and a complex (and falsified) supply chain to the manufacturer.
Try magnets of different composition, and from different manufacturers, and if only these produce the effect you might suspect something. Chemical analysis by a mass spec could also confirm whether the magnet contains a radioactive isotope.
A: As we're discussing above, it seems that the detector you're using seems to be functioning properly when used with verifiable radioactive material. The extra clicks are being caused by current induced in the counter by magnetic flux when you may be moving the detector. In order to get around this, it seems that you should use, in addition to the crinkled foil suggested by dmckee, a setup that involves keeping the business end of the detector and the sample under test stationary, thereby removing the current being induced by the changing magnetic field. Many thanks to dmckee for the insights above.
