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TEM Basics

 
Kikuchi lines
    P
 

As the crystalline specimen is tilted slightly, the fundamental spot pattern remains but Kikuchi lines move across the pattern.

Observe this by clicking on the buttons far right.

1. How many orders of reflection are visible at zero tilt, and at 0.8o tilt?
2. If the 2g reflection is excited at zero tilt in this series, which reflections are excited at 0.4o and 0.8o?

 
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