radioactive decay


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Related to radioactive decay: alpha decay, half life, radioactivity

radioactive decay

n.
1. Spontaneous disintegration of a radionuclide with the emission of energetic particles or radiation, such as alpha or beta particles or gamma rays.
2. An instance of such disintegration.

radioactive decay

n
(Nuclear Physics) disintegration of a nucleus that occurs spontaneously or as a result of electron capture. One or more different nuclei are formed and usually particles and gamma rays are emitted. Sometimes shortened to: decay Also called: disintegration

ra·di·o·ac·tive decay

(rā′dē-ō-ăk′tĭv)
The spontaneous breakdown of a radioactive nucleus into a lighter nucleus. Radioactive decay causes the release of radiation in the form of alpha particles, beta particles, or gamma rays. The end result of radioactive decay is the creation of a stable atomic nucleus.

radioactive decay

The decrease in the radiation intensity of any radioactive material with respect to time.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.radioactive decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
alpha decay - radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle
beta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle
nuclear reaction - (physics) a process that alters the energy or structure or composition of atomic nuclei
Translations
décroissance radioactive
radioaktivt sönderfall
References in periodicals archive ?
The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials.
Using models to account for radioactive decay and ingrowth (increasing concentrations of decay products), the researchers estimated how the total radioactivity concentration of the produced fluids would change in the foreseeable future.
According to Nsouli, radioactive nonmetal items, like the cellphone covers and maxi pads, oftencontain the naturally occurring radioactive isotope "thorium-232 and its daughters," which are the radionuclides produced via radioactive decay.
Radon is a colorless, odorless, tasteless gas that comes from the radioactive decay of naturally occurring uranium in the soil.
Cesium-137 undergoes radioactive decay with a 30-year half-life.
Since 129-Xenon is produced by radioactive decay of 129-Iodine, these xenon isotopes put a time stamp on the formation age of the ancient parcel of mantle to within the first 100 million years of Earth's history.
Atoms of element 117 were separated from huge numbers of other nuclear reaction products in the TransActinide Separator and Chemistry Apparatus (TASCA) and were identified through their radioactive decay.
Ocular and radiation oncologists from the US, Argentina, and Sweden address the fundamentals of radiation and radioactive decay, the mechanism of tumor cell damage, tissue tolerance, and radiation and treatment parameters; advanced techniques for intensity modulated radiotherapy, stereotactic radiotherapy, and heavy ion therapy; and brachytherapy for the treatment of intraocular tumors.
The Harvard team gathered its evidence by analyzing an afterglow that occurred when the heavy metals emitted underwent radioactive decay.
This daughter isotope can decay into another radioisotope, or the daughter isotope, that will continue the radioactive decay chain or decay into a stable element that ends the chain.
One of the examples he uses is to demonstrate radioactive decay using M&Ms.
Even so the pulsar should be contributing to the bolometric flux, which to date, is entirely accounted for by radioactive decay.