1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Bragg's Law (X-Ray Analytical Methods)

  1. Feb 12, 2016 #1
    1. The problem statement, all variables and given/known data
    Explain using word, diagrams, and/or calculations..
    (1) Why must n always be <= 2d/λ?
    (2) If λ is significantly greater then d, why will no diffraction occur?

    2. Relevant equations
    Bragg's Law nλ=2dsinθ
    n has its maximum when sinθ is 1 (at 90°)

    3. The attempt at a solution
    I am taking an X-Ray Analytical Methods course. I understand the general concept of Bragg's Law, but am having a hard time answering / proving the two questions above, perhaps I am over thinking it? Any feedback and/or direction would be greatly appreciated.
     
    Last edited: Feb 12, 2016
  2. jcsd
  3. Feb 12, 2016 #2
    What have you tried and what specifically are you having trouble with?
     
  4. Feb 12, 2016 #3
    sorry, I didn't put the problem statement in the correct area of the template (edited).

    rg: Bragg's Law nλ=2dsinθ - Explain using word, diagrams, and/or calculations..
    (1) Why must n always be <= 2d/λ?
    (2) If λ is significantly greater then d, why will no diffraction occur?

    I understand the concept of constructive and deconstructive interference, but am having a hard time mathematically proving it..
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Bragg's Law (X-Ray Analytical Methods)
  1. Bragg X-Ray Scattering (Replies: 1)

  2. X rays (Replies: 2)

  3. Bragg's Law confusion! (Replies: 4)

  4. Bragg's law (Replies: 1)

Loading...