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Coefficient of linear expansion / Bragg peaks

  1. Dec 3, 2013 #1
    1. The problem statement, all variables and given/known data

    Measurements of XRay scattering from a metal are made. The bragg peaks are θ = 53° and 48° for temperatures of 300K and 1272K.

    What is the linear expansion coefficient?

    2. Relevant equations
    linear expansion coef is given by (1/L)(dL/dT)
    Bragg equation (differential form) δd / d=δθ / tan θ.

    3. The attempt at a solution
    I don't know where to start with this question, any advice would be appreciated.
     
  2. jcsd
  3. Dec 4, 2013 #2
    what is the relationship between L and d? and between delta L and delta d?
     
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