X-Ray Source

  • Thread starter oldmisery
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  • #1
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Why do accelerating electrons (synchrotron) emit x-rays, but accelerating protons (cyclotron) don't? Both are accelerating/decelerating charges.
 

Answers and Replies

  • #2
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The emission power of synchrotron radiation depends on the relativistic Lorentz factor γ to the fourth power, so 10 GeV electrons radiate much more than 10 GeV protons, other factors being the same. See

http://hyperphysics.phy-astr.gsu.edu/hbase/particles/synchrotron.html

Protons do radiate synchrotron radiation. It is expected to be a serious problem in LHC at full energy (7 GeV per beam), because the proton synchrotron radiation is soft x-rays, that cause residual gas atoms adsorbed to the beam tube walls to desorb, causing a vacuum pressure rise and proton residual gas scattering and beam loss.

Bob S
 
  • #4
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Thanks to both for the reference, it's a great help.
 

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