Unformatted text preview: lead is 4.950 Ã…. If Xrays with Î» = 1.936 Ã… are diffracted by this set of planes, calculate the scattering angles 2 Î¸ at which firstorder, secondorder, thirdorder, and fourthorder ( n = 1, 2, 3, 4) will be observed. (47) Braggâ€™s equation contains sin Î¸ , where 2 Î¸ is the angle between the incident Xray beam and diffracted Xray beam. Since sin Î¸ â‰¤ 1, this places a limit on what can be observed in a crystal. (a) Use the Bragg equation and deduce the limitation on dspacings between planes of atoms when Cu K Î± Xradiation is used ( Î» = 1.54178 Ã…), when Mo K Î± Xradiation is used ( Î» = 0.71069 Ã…)....
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 Fall '07
 Miller
 Chemistry, Atom, Diffraction, Xray crystallography, Cubic Unit Cell, William Lawrence Bragg

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