"Terrorism." . . "Vulnerability." . . "Prevention." . . "Explosives." . . "Radioactive materials." . . "Radioactive contamination." . . "Threats." . . "Security." . . "Ammunition and Explosives." . . "Bombs." . . "Civil defense." . . "Civil Defense." . "Electromagnetic radiation." . . "Decontamination." . . "Response." . . . . "LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE." . . "Chemical, Biological and Radiological Warfare." . . "Radiation Pollution and Control." . . "Ionizing radiation." . . "United states government." . . "Detection." . . . . . . . . . . . . . . . . . "Many, rightly or wrongly, fear a terrorist attack with a radiological dispersal device (RDD). RDDs may scatter radioactive material with an explosive (a \"dirty bomb\") or other means. Radioactive atoms are unstable; as they decay, they emit electromagnetic radiation or subatomic particles that can damage cells. Many legitimate activities worldwide use radioactive material. Dealing with RDDs involves controlling sources, detecting radiation, and preparing for and responding to an attack. This report will be updated from time to time. \"Nuclear and Radiological Terrorism,\" in the CRS electronic briefing book on terrorism, tracks developments. This report does not address nuclear power-related issues; see CRS Report RS21131, \"Nuclear Powerplants: Vulnerability to Terrorist Attack.\""@en . "Terrorist \"Dirty Bombs\": A Brief Primer"@en . "Many fear a terrorist attack with a radiological dispersal device (RDD). RDDs may scatter radioactive material with an explosive (a \"dirty bomb\") or other means. Radioactive atoms are unstable; as they decay, they emit electromagnetic radiation or subatomic particles that can damage cells. Many legitimate activities worldwide use radioactive materials. This congressional report examines the following aspects of RDDs: differences between RDDs and nuclear weapons; the process by which RDDs decay and release their radioactivity; the meaning of the term \"half-life\"; biological effects of radiation; sources of radioactive materials, including medical equipment, oil well gauges, research labs, etc.; the effectiveness of RDDs; preventing an RDD attack by securing and controlling radioactive sources; detection of RDDs; advance steps the government can take to minimize the effects of an RDD attack; and how the government would respond to an RDD attack. This report will be updated. \"Nuclear and Radiological Terrorism,\" in the CRS electronic briefing book on terrorism, tracks developments. This report does not address nuclear power-related issues. For information on that subject, see CRS Report RS21131, \"Nuclear Powerplants: Vulnerability to Terrorist Attack.\""@en . . . . . . . . . . . . . "Terrorist \"dirty bombs\" a brief primer"@en . . . . . . . . . . . . . . . . . . . . . "Radioactive decay." . . "Sources." . . "Regulations." . . "Scattering." . . "Radiation dosage." . . "Radiobiology." . . "Dispersing." . . "Radioactiv, Radioactive Wastes & Fission Prod." . . "Public relations." . . "Attack." . . "Fear." . . "Recovery." . . "Radiation effects." . .