阿帆 asked in 科學其他:科學 · 2 decades ago

X-Ray單晶繞射,單晶繞射儀原理簡述

我到現在只找到有關X-Ray單晶繞射的原理之一是布拉格繞射

有人可以告訴我它實際運作用到的原理嗎?

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  • Anonymous
    2 decades ago
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    Bragg reflection which occur in the scattering of x rays from the atom planes of a crystal. It is obeying the 'Bragg relation' derived in the caption to that:                      nλ = 2d sin φ.for the conditions,  the effective interplanar spacing d can be  shown by x-ray scattering  from the same crystal to be 0.91A^°.  Since θ  =50°, it follows that φ =90°- 50°/2 = 65°. The wavelength calculated from above equation, assuming n = 1, is     λ  =  1.65  A^°.Above is belonged to 'Quantum Physics of Atoms, Moleculaes, Solids, Nuclei, and Particles', the authors are Robert Eisberg and Resnick.  

    Source(s): book
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