0 a photon (= a unit of light) that is produced in gamma radiation (= a type of radiation with a very short wavelength that passes through most solid objects) --
Electron recoils are produced by alpha, beta and gamma particles which account for the vast majority of background events.
With nuclear waste, alpha, beta and gamma particles are emitted.
Gamma particles penetrate deep into the body and are undoubtedly hazardous.
Mg decays by the emission of a high-energy beta or gamma particle, which can be measured using a scintillation counter.
