is a muon a lepton?
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It is classified as a lepton. As with other leptons, the muon is not known to have any sub-structure – that is, it is not thought to be composed of any simpler particles. The muon is an unstable subatomic particle with a mean lifetime of 2.2 μs, much longer than many other subatomic particles.
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In the physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.
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1. What subatomic particles do these symbols represent in Model 1? Proton.
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A positron or antielectron is the antimatter counterpart to an electron. A positron has the equal or same mass as an electron and a spin of 1/2, but it has an electrical charge of +1. When a positron collides with electron annihilation occur which results in the production of two or more gamma ray photons.
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Neutrons and protons are in the nucleus. There are no electrons in the nucleus. Note that a neutron is not composed of a proton and an electron. Some other particles that are not in the nucleus: positrons, neutrinos, antineutrinos, antiprotons, antineutrons, muons, etc.
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The K shell only holds two electrons. The L shell only holds eight electrons. The M shell only holds eight electrons. The M shell can actually hold up to 18 electrons as you move to higher atomic numbers.
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Muon, elementary subatomic particle similar to the electron but 207 times heavier. ... It was subsequently discovered, however, that a muon is correctly assigned as a member of the lepton group of subatomic particles—i.e., it never reacts with nuclei or other particles through the strong interaction.
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Muon neutrino. Small but non-zero. ... Together with the muon it forms the second generation of leptons, hence the name muon neutrino. It was first hypothesized in the early 1940s by several people, and was discovered in 1962 by Leon Lederman, Melvin Schwartz and Jack Steinberger.
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['0.934% Argon.', '0.0018% Neon.', '0.00052% Helium.', '0.00011% Krypton.', '0.000009% Xenon.']
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A muon has a rest mass energy of 105.7 MeV, and it decays into an electron and a massless particle.
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Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.
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Antimatter is identical to normal matter in almost every way. The only difference is electric charge, which is opposite for the two forms of matter. ... For every billion pairs of matter and antimatter particles, there was one extra particle of matter.
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In fact, an alpha particle really is a nucleus - it's the same as the nucleus of a common atom of helium - but it doesn't have any electrons around it, and it's traveling very fast. Alpha particles are a type of ionizing radiation.
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Neutrinos all have less physical size (assuming they have it at all) than quarks. In the standard model, all the elementary particles are point particles (if they weren't points, we wouldn't consider them elementary).
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Muons were formerly called "mu mesons", but are not classified as mesons by modern particle physicists (see § History), and that name is no longer used by the physics community. ... Because muons have a greater mass and energy than the decay energy of radioactivity, they are not produced by radioactive decay.
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A new particle with a mass of 125 GeV was discovered in 2012 and later confirmed to be the Higgs boson with more precise measurements. The Higgs boson is an elementary particle in the Standard Model of particle physics, produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory.
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Muons can be used to explore a very diverse range of materials. Their applications broadly fall into two categories: using muons as probe particles to explore atomic level behaviour, and using muons as light protons to understand how hydrogen behaves in a material.