A radioactive source is a known quantity of a radionuclide which emits ionizing radiation, typically one or more of the radiation types gamma rays, alpha...

of the placement of the radioactive source are interstitial and contact. In the case of interstitial brachytherapy, the sources are placed directly in...

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable...

An orphan source is a self-contained radioactive source that is no longer under regulatory control. The United States Nuclear Regulatory Commission definition...

Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids...

called the "Radioactive Boy Scout" and the "Nuclear Boy Scout" was an American nuclear radiation enthusiast who built a homemade neutron source at the age...

was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia, Goiás, Brazil, after an unsecured radiotherapy source was stolen...

difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting...

pregnancy. October 21, 1994 – Estonia – Theft of radioactive material in Tammiku. A caesium-137 source was stolen from a waste storage facility by two...

radiological dispersal device is a radiological weapon that combines radioactive material with conventional explosives. The purpose of the weapon is to...

cylinder in his pocket, not knowing that it was a strong caesium-137 radioactive source that was released from a container broken by the falling drum. He...

something Radioactive source, a known quantity of a radionuclide which emits ionizing radiation Sound source, an object emitting sound Voltage source, any...

Schrödinger's original formulation, a cat, a flask of poison, and a radioactive source are placed in a sealed box. If an internal radiation monitor such...

Sheriff court fined Schlumberger Oilfield UK £300,000 for losing a radioactive source on the rig floor on the Ensco 101 mobile drilling rig in the North...

the discovery of X-rays, radioactivity was discovered. By using radioactive sources such as radium, far higher photon energies could be obtained than...

Radioactive scrap metal is created when radioactive material enters the metal recycling process and contaminates scrap metal. A "lost source accident"...

sources, in which radioactive material is unknowingly kept, sold, or stolen. The Goiânia accident is an example, where a forgotten radioactive source...

the predictable series of radioactive disintegrations undergone by the nuclei of certain unstable chemical elements. Radioactive isotopes do not usually...

measuring instrument, not the rate of emission from the source of radiation. For radioactive decay measurements it must not be confused with disintegrations...

from a radioactive source, using semiconductor junctions. A common source used is the hydrogen isotope tritium. Unlike most nuclear power sources which...

body to receive a bone marrow transplant. Brachytherapy, in which a radioactive source is placed inside or next to the area requiring treatment, is another...

notable civilian accidents involving radioactive materials or involving ionizing radiation from artificial sources such as x-ray tubes and particle accelerators...

relatively little radiation to other organs, or by brachytherapy, where a radioactive source is surgically inserted into the prostate. IMRT is given over several...

the radioactive source of the energy for visible light emissions, by detecting predicted gamma-ray line radiation from two of its abundant radioactive nuclei...

synthetic radioactive isotope of cobalt, with a half-life of 5.27 years, and emits highly penetrating gamma rays. It is commonly used as a radiation source for...

referred to as the Mayak disaster or Ozyorsk disaster in newer sources, was a radioactive contamination accident that occurred on 29 September 1957 at Mayak...

the 1910s to the 1970s, it was used as a radioactive source for radioluminescent devices and also in radioactive quackery for its supposed curative power...

irradiating or imaging is known as a gamma source. It is also called a radioactive source, isotope source, or radiation source, though these more general terms...

method used to acquire a quantitative spectrum measurement. Most radioactive sources produce gamma rays, which are of various energies and intensities...

Low-level waste (LLW) or low-level radioactive waste (LLRW) is a category of nuclear waste. The definition of low-level waste is set by the nuclear regulators...