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Interaction of Radiation with Matter

  1. Jun 16, 2009 #1
    I would like to understand more about refraction phenomenum from the point of view of interaction of photons with matter. I know that refraction phenomenum can be explained by change of speed of light when it passes through a transparent material medium. We are accustomed to study interaction of photons with matter, just showing examples with x-rays and gamma-rays, that are electromagnetic waves of high energy, from the processes of scattering. Would be interesting to treat the refraction phenomenum based on the processes of interaction of photons with matter.
     
  2. jcsd
  3. Jun 16, 2009 #2
    hi, there's something called bragg equations. It might be a good place to start.
     
  4. Jun 16, 2009 #3
    Chapter 7 of Jackson "Classical Electrodynamics" 2nd Ed. covers propagation of plane waves in nonconducting media using Maxwell's equations, and in Sec, 7.3 identifies n (index of refraction) as sqrt(ε) (dielectric constant). He also derives Snell's law. He also shows in Eq 7.3 that v=c/sqrt(ε). So basically, radiation interacts with the dielectric constant to slow the plane wave down.

    α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω
     
  5. Jun 22, 2010 #4
    Thanks for everything!
     
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