  this is for notes
======================
 1 - Si, E=67.408, 1 1 1
 2 - Ge, E=17.48, 2 2 0
 3 - Si, E=25,  2 2 0
 4 - Si, MoKa, 4 4 0
 5 - Si, E=10, 4 4 0 - E=20, 8 8 0    
 6 - CdTe, E=12.4, 1 1 1
 7 - GaAs, 4 0 0 
 8 - Si, E=12, 2 2 0
 9 - Si, E=CuKa , 220 
10 -  MoKa, 2 6 0
11 -  MoKa, 7 6-9
12 -  MoKa, 1 2 0
13 - SiC E=7
14 - Si, E=25.9, 2 2 0
 15 - TeO2 E=17.4611  220 
 16 -                         371
 17 -                         151
 18 -                         464
 19 -                         244
 20 - Si, E=15, 422
 21 - Si, E=17.461, 111
 22 - Si, E=10.1, 333
 23 - GaAs, 2 0 0, E=10.1
 24 - Al[0.7]Ga[0.3]As, 4 0 0, E=10.4
 25 -  MoKa, 4 4 0
 26   Si, E=12.3984, 220
 27   Si, E=25, 111
