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Unformatted text preview: parameter a . 4. X-ray diffraction data from Lee, Bluemle and Bates [Discovery of a Frank-Kasper s Phase in Sphere-Forming Block Copolymer Melts, Science 2010, 330 , pgs 349-353] is shown below. (a) Show that the peak indexing as . , 6 , 5 , 4 , 3 , 2 , 1 * etc q q corresponds to a bcc lattice. (b) Determine the lattice parameter a , of the bcc unit cell. (c) Compare the value of a for this material to a typical lattice parameter value for an atomic crystal (i.e., Au, Si, etc.). ChE 350 Fall 2011 Homework 3 (Due Tuesday, Sept. 27) Name:________________________ 2...
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- Spring '08
- Chemical Engineering