123B_1_123B_W 11 Midterm Exam_1

123B_1_123B_W 11 Midterm Exam_1 - EE 123B Midterm Exam...

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EE 123B Midterm Exam Solid State II Instructor: Diana Huffaker Due: noon 2/11/11 in Eng IV lab 18-141 (Huffaker lab) Student Name: Student ID# I completed this exam independently and without the consultation of others. Signed:
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For full credit, show all equations, derivations, sketches plotted data in a neat and well-organized format. This cannot be over-emphasized. Place a square around your final answer. 1. (10) Two unlabeled boxes contain AgBr and Ag for analysis using XRD. Third-order diffraction maxima are observed from the (111) planes, using X-rays of wavelength 0.0862 nm. a. What is the diffracted beam angle, θ (with respect to the plane) for both crystals? b. Is this sufficient to identify the two materials? Explain. 2. (30) Continue to study the AgBr and Ag at the XRD facility. Using the equations for structure factor, S f and atomic form factor, f , design a meaningful experiment to further identify the two samples. a. (20) Calculate S
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123B_1_123B_W 11 Midterm Exam_1 - EE 123B Midterm Exam...

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