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Homework Help: Radiation Force on a Classical Atom

  1. Mar 10, 2013 #1
    1. The problem statement, all variables and given/known data

    Show that the integral under this absorption cross section,σ, from a de-tuning of -∞ to +∞ is independent of the line width of the resonance,[itex]\gamma[/itex]

    2. Relevant equations

    I have posted an attachment with the picture of the formula. I was having some difficulties with the quick symbol/symbols.

    3. The attempt at a solution

    Well, it said take the integral from -infinity to +infinity so that is what did. I took the variable to be ∫σ dω

    Is this the correct way to show that σ is independent of [itex]\gamma[/itex]

    Attached Files:

    • PH1.JPG
      File size:
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  2. jcsd
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