High-energy radiation with the capacity of creating ionization in substances through which it passes. It includes nonparticulate radiation, eg x-rays, and radiation from lively recharged particles, such as for example alpha and beta rays, and also by neutrons, as from a nuclear response.
High-energy radiation that is capable of causing ionization in substances by which it passes; also includes high-energy particles.
rays of quickly moving subatomic particles, x-reys, or gamma rays, sufficiently energetic to cause ionization when consumed by matter.
high-energy radiation capable of making ionization in substances whereby it passes