Step by step calculation on how 2theta is calculated in since2theta.

Worked Example Consider the following XRD pattern for Aluminum, which was collected using CuKa radiation. Intensity (%) (38.43,100.0) 100 90 80 + ALUMINIUM a =1.540562 70 60 50 + (44.67,46.9) 40 30 (65.02,26.4) (78.13,27.9) (116.36,11.9) 20 (82.33,7.8) 10 (111.83,12.2)V (98.93,3.6) D 2002 0 0 5 10 15 20 25 30 3540 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Index this pattern and determine the lattice parameters. (1) Identify the peaks. Peak No. 20 sine 11 38.43 21 44.67 3 65.02 4 78.13 51 82.33 6 98.93 7 111.83 8 116.36 N|