Talk:PlanetPhysics/Muon

Original TeX Content from PlanetPhysics Archive
%%% This file is part of PlanetPhysics snapshot of 2011-09-01 %%% Primary Title: Muon %%% Primary Category Code: 14.60.Ef %%% Filename: Muon.tex %%% Version: 2 %%% Owner: metalac %%% Author(s): metalac %%% PlanetPhysics is released under the GNU Free Documentation License. %%% You should have received a file called fdl.txt along with this file. %%% If not, please write to gnu@gnu.org. \documentclass[12pt]{article} \pagestyle{empty} \setlength{\paperwidth}{8.5in} \setlength{\paperheight}{11in}

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Muon is a 1/2 \htmladdnormallink{spin}{http://planetphysics.us/encyclopedia/QuarkAntiquarkPair.html} \htmladdnormallink{fermion}{http://planetphysics.us/encyclopedia/Fermion.html} and it's one of the fundamental physics \htmladdnormallink{particles}{http://planetphysics.us/encyclopedia/Particle.html} known as \htmladdnormallink{leptons}{http://planetphysics.us/encyclopedia/Lepton.html}. Muons have similar characterstics to electron except that their \htmladdnormallink{mass}{http://planetphysics.us/encyclopedia/CosmologicalConstant.html} is about 200 times greater. Muons that are found on Earth are mostly product of a reaction between cosmic rays and matter in Earth's athmosphere. Even though muons have a very short lifetime (2.2 microseconds) we still see a relatively large \htmladdnormallink{flux}{http://planetphysics.us/encyclopedia/AbsoluteMagnitude.html} of muons on Earth's surface, since muons travel at high \htmladdnormallink{velocities}{http://planetphysics.us/encyclopedia/Velocity.html} and thust time dialation effect allows them to travel far.

Muons are one of the biggest sources of background \htmladdnormallink{radiation}{http://planetphysics.us/encyclopedia/Cyclotron.html} on Earth's surface. This is precisely why many experiments are moved deep into Earth in order to eliminate the background noise of muons.

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