- 行业: Government
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United States Department of Health and Human Services, Radiation Emergency Medical Management
The process of adding one or more electrons to, or removing one or more electrons from, atoms or molecules, thereby creating ions. High temperatures, electrical discharges, or nuclear radiation can cause ionization.
Industry:Medical devices
Any radiation capable of displacing electrons from atoms, thereby producing ions. High doses of ionizing radiation may produce severe skin or tissue damage. See also alpha particle, beta particles, gamma rays, neutron, x-ray.
Industry:Medical devices
A gamma-ray emitting radioisotope used for gamma radiography. The half-life is 73-83 days.
Industry:Medical devices
A nuclide of an element having the same number of protons but a different number of neutrons.
Industry:Medical devices
The initial kinetic energy of the primary ionizing particles (photoelectrons, compton electrons, positron/negatron pairs from photon radiation, and scattered nuclei from fast neutrons) produced by the interaction of the incident uncharged radiation, per unit mass of interacting medium. Unit of measure is gray. See also air kerma.
Industry:Medical devices
The energy of an explosion that is equivalent to an explosion of 1,000 tons of tnt. One kiloton equals 1 trillion (1012) calories. See also megaton.
Industry:Medical devices
The time between exposure to a toxic material and the appearance of a resultant health effect.
Industry:Medical devices
A heavy metal. Several isotopes of lead, such as pb-210 which emits beta particles, are in the uranium decay chain.
Industry:Medical devices
The federal agency that leads and coordinates the emergency response activities of other federal agencies during a nuclear emergency. After a nuclear emergency, the federal radiological emergency response plan (frerp, available at http://www.fas.org/nuke/guide/usa/doctrine/national/frerp.htm) will determine which federal agency will be the lfa.
Industry:Medical devices
