metastable isomer

metastable isomer
An excited state of an isotope, often having different a spin quantum number (designated with an m)

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  • isomer — /uy seuh meuhr/, n. 1. Chem. a compound displaying isomerism with one or more other compounds. 2. Also called nuclear isomer. Physics. a nuclide that exhibits isomerism with one or more other nuclides. [1865 70; back formation from ISOMERIC] * *… …   Universalium

  • metastable — 1. Of uncertain stability; in a condition to pass into another phase when slightly disturbed; e.g., water, when cooled below the freezing point may remain liquid but will at once congeal if a piece of ice is added. 2. Denoting the excited… …   Medical dictionary

  • Nuclear isomer — A nuclear isomer is a metastable state of an atomic nucleus caused by the excitation of one or more of its nucleons (protons or neutrons). Metastable refers to the fact that these excited states have half lives more than 100 to 1000 times the… …   Wikipedia

  • Ununbium — (pronEng|juːˈnʌnbiəm [cite encyclopedia | encyclopedia = Columbia Encyclopedia | url = http://reference.aol.com/columbia/ a/ununbium/20051207161909990010 | title = ununbium] or IPA|/əˈnʌnbiəm/ [cite dictionary | encyclopedia = Dictionary.com |… …   Wikipedia

  • Francium — radon ← francium → radium Cs ↑ Fr ↓ Uue …   Wikipedia

  • Isotopes of copper — Copper (Cu) has two stable isotopes, 63Cu and 65Cu, along with 27 radioisotopes. The most stable of these is 67Cu with a half life of 61.83 hours. The least stable is 54Cu with a half life of approximately 75 ns. Most have half lives… …   Wikipedia

  • Iridium-192 — (symbol Ir192m) is an isotope of Iridium. The m denotes that it is a metastable isomer. Its half life is 73.83 days. It decays by emitting beta particles and gamma radiation.Iridium 192 is used as an industrial radioisotope to locate areas of… …   Wikipedia

  • metastate — noun a) A metastable isomer b) A probability measure on the space of all thermodynamic states of a system …   Wiktionary

  • Oxocarbon — An oxocarbon or oxide of carbon is an inorganic compound consisting only of carbon and oxygen.[1][2] The simplest and most common oxocarbons are carbon monoxide (CO) and carbon dioxide (CO2). Many other stable or metastable oxides of carbon are… …   Wikipedia

  • Technetium — molybdenum ← technetium → ruthenium Mn ↑ Tc ↓ Re …   Wikipedia

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