MidtermExam2009

MidtermExam2009 - EMSE 312 FALL 2009 DIFFRACTION PRINCIPLES...

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Unformatted text preview: EMSE 312 FALL 2009 DIFFRACTION PRINCIPLES MIDTERM EXAM Thursday October 15, 2009 12:30 - 1:45 PM This is a CLOSED BOOK and a CLOSED NOTE exam. The exam consists of eight (8) 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 (10 p) : _________ Question 3 (10 p): _________ Question 4 (10 p): _________ Question 5 (20 p): _________ Question 6 (10 p): _________ Question 7 (10 p): _________ Question 8 (20 p): _________ ======================= Total (100 p): _______________ Midterm Grade: ____________ Useful constants: Plancks constant: [ ] 34 6.626 10 = h J s Speed of light: [ ] 8 2.998 10 / = c m s Universal mass constant: [ ] [ ] 27 24 1.66 10 1.66 10 u kg = = g Mass of electron: [ ] 31 9.109 10 = e m kg Charge of an electron: [ ] 19 1.602 10 = e C Avogadros number: 23 1 6.022 10 = A N mol [ ] [ ] 19 1 1.6022 10 = eV J KPDL: 10-13-09 1 EMSE 312 Midterm Exam FALL 2009 KPDL: 10-13-09 2 1. (10 p) Explain briefly each of the following (use simple sketches to illustrate when suitable): (a) (2 p) Proper Rotation (b) (2 p) Point Group (c) (2 p) Bravais Lattice (d) (2 p) Screw Axis Symmetry (e) (2 p) Space group (a) (b) (c) (d) (e) EMSE 312 Midterm Exam FALL 2009 KPDL: 10-13-09 3 2. (10 p) The crystal system is determined by the point group symmetry, and the space lattice (i.e., centering) must be compatible with a particular crystal system. Complete the two tables (i....
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MidtermExam2009 - EMSE 312 FALL 2009 DIFFRACTION PRINCIPLES...

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