Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries enough energy to ionize an atom or molecule (that is, to completely remove an electron from its orbit).
If the individual particles do not carry this amount of energy, it is essentially impossible for even a large flood of particles to cause ionization.
These ionizations, if enough occur, can be very destructive to living tissue..
For more information about the topic Ionizing radiation, read the full article at Wikipedia.org, or see the following related articles:
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Ionizing radiation at Wikipedia.org. See the Wikipedia copyright page for more details.

