/myooh oh"nee euhm/, n. Physics.
an electron and a positively charged muon bound together by electrical attraction in the same manner as the electron and proton in a hydrogen atom.
[1955-60; MU(ON) + -onium, prob. extracted from POSITRONIUM]

* * *

      short-lived quasi-atom composed of a positive muon (an antiparticle), as nucleus, and an ordinary negative electron. It is formed when a positive muon captures an atomic electron after being slowed down in matter. Muoniums form a few compounds with gases such as nitrogen dioxide and ethylene. Muonium research throws some light on the puzzling nature of muons (essentially heavy electrons) and their relation to ordinary electrons.

* * *

Universalium. 2010.

Look at other dictionaries:

  • muonium — [mɥɔnjɔm] n. m. ÉTYM. V. 1965; de muon. ❖ ♦ Phys. Système lié constitué par un proton et un muon négatif …   Encyclopédie Universelle

  • Muonium — For atoms where muons have replaced one or more electrons, see muonic atom. Muonium is an exotic atom made up of an antimuon and an electron,[1] which was discovered in 1960[2] and is given the chemical symbol Mu. During the muon s 2 µs… …   Wikipedia

  • Muonium — Le muonium est un atome exotique formé d un muon μ+ lié à un électron e , à l instar d un atome d hydrogène. Sa durée de vie est d environ 2,2 µs, pendant lesquelles il se comporte comme un élément chimique aux propriétés voisines de celles… …   Wikipédia en Français

  • muonium — noun Etymology: New Latin Date: 1957 a short lived quasi atom consisting of an electron and a positive muon …   New Collegiate Dictionary

  • muonium — noun an exotic atom formed when a positively charged muon (an anti muon) and an electron are bound by their mutual electrical attraction; chemically equivalent to a light, short lived isotope of hydrogen …   Wiktionary

  • muonium — mu·on·ium …   English syllables

  • muonium — m(y)üˈōnēəm, ˈän noun ( s) Etymology: New Latin, from International Scientific Vocabulary muon + New Latin ium : a short lived quasi atom consisting of an electron and a positive muon …   Useful english dictionary

  • Isotopes of hydrogen — Hydrogen (H) (Standard atomic mass: 1.00794(7) u) has three naturally occurring isotopes, denoted 1H, 2H, and 3H. Other, highly unstable nuclei (4H to 7H) have been synthesized in the laboratory but not observed in nature.Gurov YB, Aleshkin DV,… …   Wikipedia

  • Exotic atom — An exotic atom is an otherwise normal atom in which one or more sub atomic particles have been replaced by other particles of the same charge. For example, electrons may be replaced by other negatively charged particles such as muons (muonic… …   Wikipedia

  • Muon — The Moon s cosmic ray shadow, as seen in secondary muons generated by cosmic rays in the atmosphere, and detected 700 meters below ground, at the Soudan II detector Composition Elementary particle Statistics …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.