Högenergipositroner eller -elektroner som skjuts ut ur en sönderfallande atomkärna.
High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.
Betastrålar
Beta Particle — Particle, Beta — Particles, Beta — Beta Rays — Beta Ray — Ray, Beta — Rays, Beta — Beta Radiation — Beta Radiations — Radiations, Beta — Radiation, Beta