particles or penetrating rays emitted by a radioactive source. (see alpha radation, beta radiation, gamma radiation, radiation)
Ionizing radiation (alpha, beta, and gamma) originating in the nuclei of radioactive atoms.
Nuclear radiation emanates from the nucleus of an atom. It is ionising radiation. There are four types of nuclear radiation, three are made of matter: alpha, beta and gamma and the fourth is an antimatter particle: the positron.
spontaneous disintegration of atomic nuclei by the emission of subatomic particles called alpha particles and beta particles, or of electromagnetic rays called X rays and gamma rays.
Particles (alpha, beta, neutrons) or photons (gamma) emitted from the nucleus of unstable radioactive atoms as a result of radioactive decay. return to: [] [ previous location
Radiation, usually alpha, beta, or gamma, that emanates from an unstable atomic nucleus.
Invisible particles or waves given off by radioactive materials such as uranium.
Ionizing radiation originating in the nuclei of atoms; alpha, beta, and gamma radiation.
Particulate and electromagnetic radiation emitted from atomic nuclei in various nuclear processes. The important nuclear radiations, from the weapon standpoint, are alpha and beta particles, gamma rays, and neutrons. All nuclear radiations are ionizing radiations, but the reverse is not true; x-rays for example, are included among ionizing radiations, but they are not nuclear radiations since they do not originate from atomic nuclei.
In a radioactive atom, the nucleus carries too many or too few neutrons making the atom unstable. In order to get rid of the instability, bursts of radiation are produced. Because the energy comes from the nucleus it is called nuclear radiation. These bursts of radiation are sent out as alpha rays, beta rays or gamma rays. (Although all three types of rays can be produced by a radioactive nucleus, they are never all produced by one nucleus at the same time.) This process of change is called radioactive decay. Eventually after one or more bursts of nuclear radiation, the nucleus becomes stable and non-radioactive.
general term for all of the deadly radiation emitted in the aftermath of a nuclear explosion.
Corpuscular emissions, such as alpha and beta particles, or electromagnetic radiation, such as gamma rays, originating in the nucleus of an atom.