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Crystallography, diffraction, identifying the pure element

  1. Nov 12, 2016 #1
    1. The problem statement, all variables and given/known data
    The only things you know about the sample are: (i) it has some kind of cubic lattice, and (ii) it is a pure element. Identify the element in the crystalline sample.
    SC: R = 0.5a
    FCC: R = 0.25a√2
    BCC: R = 0.25a√3

    Distances from Bragg peaks:
    d1 = 0.2037 nm
    d2 = 0.1746 nm
    d3 = 0.1244 nm

    2. Relevant equations
    n λ = 2dhklsin θ

    d = a/√(h2+k2+l2)

    3. The attempt at a solution
    Assuming the above is correct, I'm stuck.
    I think I need a table or something of each element.

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  2. jcsd
  3. Nov 12, 2016 #2
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