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Compton Radius vs Compton Wavelength

  1. Aug 4, 2004 #1
    A 1992 book dedicated to electrons writes about the Compton Radius of an electron. The Compton Wavelength for an electron is defined as 2.42x10(-10) cm, whereas this book defines the electron Compton radius as 0.386x10(-10) cm. What is the difference?
     
  2. jcsd
  3. Aug 5, 2004 #2
  4. Oct 1, 2004 #3
    The ratio between both space magnitude are 6.2694, very close to 2*Pi.
    Sure it's really 2*Pi
     
  5. Oct 1, 2004 #4
    :confused:
    But wait: I think you mistaked the values
    I have the for classical electron radious
    Ro= e^2 /(mc^2)= 2.82E-13 cm.
    and on the other hand, the compton wavelenght
    LambdaC= h/mc= 24.3E-13 cm.
    ( m is the rest mass of the electron)



    and the ratio is really LambdaC/Ro= 8.61 (dimensionless value)
     
  6. May 24, 2005 #5
    One easily ptoves by substituting known formula relations that lambda_C=(2pi/alpha)R_0, where alpha the fine structure constant.
     
  7. May 24, 2005 #6
    One easily proves by substituting known formula relations that lambda_C=(2pi/alpha)R_0, where alpha the fine structure constant.
     
  8. May 27, 2005 #7

    Meir Achuz

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    Lanjarote's first post was right, the second has an arith error.
    Its just that some books use h and some use hbar .
     
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