Exposure A measure of the ionization produced in air by x or gamma radiation. The sum of electric charges on all ions of one sign produced in air when all electrons liberated by photons in a volume of air are completely stopped in air, divided by the mass of the air in the volume. The units of exposure in air are the international unit, coulomb per kilogram or the roentgen. Any electromagnetic or particulate radiation capable of producing ions directly or indirectly in its passage through matter, In general, it will refer to gamma rays and X-rays, alpha and beta particles, neutrons, protons, high speed electrons, and other nuclear particles. Monitoring Checking for the presence of sources of radiation under a specific set of conditions.
Monitoring includes measuring levels of radiation fields and determining contamination levels.
Monitoring is performed both for health protection and for protection of future and current research. Personnel Dosimetry Devices that measure the cumulative dose of radiation to an individual. Any material, solid, liquid or gas that emits ionizing radiation spontaneously. A unit of exposure to ionizing radiation. It is the amount of gamma rays or X-rays required to produce ions carrying 1 electrostatic unit of electrical charge in 1 cubic centimeter of dry air under standard conditions.