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Radiological Weapons as Means of Attack
Anthony H. Cordesman
Radiological weapons are generally felt to be suitable largely for terror, political, and area denial purposes, rather than mass killings. Unlike nuclear weapons, they spread radioactive material contaminating personnel, equipment, facilities, and terrain. The radioactive material acts as a toxic chemical to which exposure eventually proves harmful or fatal.
Radiation is energy that comes from a source and travels through some material or through space. Light, heat, and sound are types of radiation.
Atom-derived radiation is called iodizing radiation because it can produce charged particles (ions) in matter. Ionizing radiation is produced by unstable atoms. Unstable atoms differ from stable atoms because they have an excess of energy or mass or both. Unstable atoms are said to be radioactive.
To reach stability, these atoms give off, or emit, the excess energy or mass.
These emissions are called radiation. The kinds of radiation are electromagnetic (like light) and particulate (i.e., mass given off with the energy of motion). Gamma radiation and X-rays are examples of electromagnetic radiation. Beta and alpha radiation are examples of particulate radiation.
Ionizing radiation can also be produced by devices such as X-ray machines.
Three types of radiation-induced injury can occur: external irradiation, contamination with radioactive materials, and incorporation of radioactive material into body cells, tissues, or organs. External irradiation occurs when all or part of the body is exposed to penetrating radiation from an external source. During exposure, this radiation can be absorbed by the body or it can pass completely through. A similar thing occurs during an ordinary chest x-ray. Following external exposure, an individual is not radioactive and can be treated like any other patient. External radiation does not make a person radioactive. The second type of radiation injury

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