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Unformatted text preview: KPDL: 12-14-09 1 EMSE 312 FALL 2009 DIFFRACTION PRINCIPLES FINAL EXAM Tuesday December 15, 2009 8:30 AM - 11:30 AM This is an OPEN BOOK and an OPEN NOTE exam. The exam consists of Seven (7) questions, all with several parts. Answer ALL parts of ALL questions for a total of 100 POINTS. Make your answers as BRIEF as possible. GOOD LUCK!!! NAME: __________________________ Question 1 (10p): _________ Question 2 (10p): _________ Question 3 (20p): _________ Question 4 (10p): _________ Question 5 (5p): _________ Question 6 (25p): _________ Question 7 (20p): _________ ======================= Total (100p): _______________ Midterm Exam (30%): __________________________ Homework (30%): __________________________ Final Exam (40%): __________________________ Total: __________________________ Final Grade: __________________________ EMSE 312 Final Exam FALL 2009 KPDL: 12-14-09 2 1. Crystallography: Explain briefly each of the following. Use a sketch if convenient. (a) (2 p) A 6 3 screw axis (b) (2 p) The difference between a d glide plane and a n glide plane (c) (2 p) The seven (7) different crystal systems (d) (2 p) The m3 point group (e) (2 p) The relationship between a Point Group and a Bravais Lattice (10 p) 2. Optical Diffraction/Fourier Transforms: (a) (5 p) Draw the most intense features of an optical diffractogram that would be obtained from one of the square apertures shown below. (b) (5 p) Draw the most intense features of an optical diffractogram that would be obtained from all three square apertures punched out from an opaque screen in an arrangement shown below....
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- Spring '08