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muon    
n. ｇ粒子(中间子)

ｇ粒子(中间子)

muon
n 1: an elementary particle with a negative charge and a half-
life of 2 microsecond; decays to electron and neutrino and
antineutrino [synonym: {muon}, {negative muon}, {mu-meson}]

Meson \Mes"on\, n. [NL., fr. Gr. me`son middle, neut. of me`sos,
a., middle.]
1. (Anat.) The mesial plane dividing the body of an animal
into similar right and left halves. The line in which it
meets the dorsal surface has been called the dorsimeson,
and the corresponding ventral edge the ventrimeson. --B.
G. Wilder.
[1913 Webster]

2. (Physics) An elementary particle made up of two quarks; a
hadron having a baryon number of zero; any hadron other
than a baryon. Mesons are bosons with integral values of
spin, having a mass intermediate between those of the
electron and a nucleon; they may have positive or negative
charges, or may be neutral. Mesons are of three types: the
{pion} ([pi]-meson), {kaon} (K-mesons), and
{[eta]-mesons}.
[PJC]

{mu meson} (Physics) the former name for the {muon}, a
particle which is not a true meson[2]. The term is no
longer used in technical literature, except historically.
[PJC]


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  • Muon - Wikipedia
    It is classified as a lepton As with other leptons, the muon is not thought to be composed of any constituent particles The muon is an unstable subatomic particle with a mean lifetime of 2 2 μs
  • Muon | Elementary particle, Lepton, Weak interaction | Britannica
    Muon, elementary subatomic particle similar to the electron but 207 times heavier It has two forms, the negatively charged muon and its positively charged antiparticle
  • What are muons and where do they come from?
    A muon is an elementary particle that is very similar to an electron, but much more massive than it It was discovered in the first half of the twentieth century and was initially suspected to be something else entirely
  • DOE Explains. . . Muons | Department of Energy
    The muon is one of the fundamental subatomic particles, the most basic building blocks of the universe as described in the Standard Model of particle physics Muons are similar to electrons but weigh more than 207 times as much
  • About Muons – MuonSources
    Muons are subatomic elementary particles, similar to electrons, but around 200 times heavier Muons have a spin of a half and can be either positively or negatively charged (the antiparticle) The muons used in research are formed into beams and implanted into materials
  • What are muons? What is muon science? - Cambridge University Press . . .
    Muons are unstable elementary particles of two charge types (positive μ+ and negative μ−) having a spin of 1 2, an unusual mass intermediate between the proton mass and the electron mass (1 9 mp, 207 me), and 2 2 μs lifetime
  • Muons - Lawrence Berkeley National Laboratory
    A muon interacts very little with matter except by ionization Because of this, muons can travel large distances and commonly reach the ground However, they lose energy proportional to the amount of matter they pass This is proportional to the density (g cm 3) times the path length (cm)
  • Muons: The Subatomic Particles Shaking Up the World of Physics
    Muons are elementary particles similar to electrons but with greater mass They are created naturally in cosmic rays and play a crucial role in particle physics experiments Muons have unique properties that make them useful for studying fundamental physics concepts
  • Muon - Wikiwand
    The muon is an unstable subatomic particle with a mean lifetime of 2 2 μs, much longer than many other subatomic particles
  • Characteristics of muons - Muon research - NMI3
    Muons have a mass of 105 7 MeV c2, which is about 200 times the mass of an electron Since the muon's interactions are very similar to those of the electron, a muon can be thought of as a much heavier version of the electron For materials studies, it is mainly the positive muon that is used





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