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radioactive by alpha-particle emission

См. также в других словарях:

  • Alpha particle — Alpha particles (named after and denoted by the first letter in the Greek alphabet, α) consist of two protons and two neutrons bound together into a particle identical to a helium nucleus; hence, it can be written as He2+ or 42He2+. They are a… …   Wikipedia

  • Alpha particle X-ray spectrometer — APXS is also an abbreviation for APache eXtenSion tool, an extension for Apache web servers. [ Mars Pathfinder Sojourner rover] An Alpha Particle X Ray Spectrometer (APXS) (or Alpha Proton X Ray Spectrometer for the Pathfinder mission) is a… …   Wikipedia

  • Particle radiation — is the radiation of energy by means of fast moving subatomic particles. Particle radiation is referred to as a particle beam if the particles are all moving in the same direction, similar to a light beam.Due to the wave particle duality, all… …   Wikipedia

  • Radioactive decay — For particle decay in a more general context, see Particle decay. For more information on hazards of various kinds of radiation from decay, see Ionizing radiation. Radioactive redirects here. For other uses, see Radioactive (disambiguation).… …   Wikipedia

  • alpha decay — noun radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle • Hypernyms: ↑decay, ↑radioactive decay, ↑disintegration * * * noun : the radioactive decay of an atomic nucleus by emission of an alpha particle …   Useful english dictionary

  • Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …   Wikipedia

  • alpha decay — Physics. a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two. [1935 40] * * * Type of radioactive disintegration (see radioactivity) in which some unstable atomic nuclei… …   Universalium

  • Alpha decay — 2 less. For example:(The second form is preferred because the first form appears electrically unbalanced. Fundamentally, the recoiling nucleus is very quickly stripped of two electrons to neutralize the ionized helium cation.)An alpha particle is …   Wikipedia

  • particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …   Universalium

  • alpha ray — noun the radiation of alpha particles during radioactive decay • Syn: ↑alpha radiation • Hypernyms: ↑corpuscular radiation, ↑particulate radiation, ↑ionizing radiation * * * noun 1. : an alpha particle moving a …   Useful english dictionary

  • radioactive series — Physics, Chem. a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced. Also called decay series. [1920 25] * * * Any of… …   Universalium

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