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Homework Help: Why is the mass absorption coefficient used rather than the linear absorption?

  1. Oct 27, 2008 #1
    1. The problem statement, all variables and given/known data

    Why is the mass absorption coefficient used rather than the linear absorption coefficient?

    2. Relevant equations

    mac=lac/density

    3. The attempt at a solution

    is it because mac is independent of physical from?
     
  2. jcsd
  3. Oct 27, 2008 #2
    You are right. The mass coefficient depends only on the type of atom in the sample.
    You can calculate the coefficient for mixture or compounds if you know the mass coeff of the component atoms.
    You are thinking about the x-ray coefficients, right?
     
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