Crystal Structure using Electron Diffraction

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 Code Number :   7A60.10  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

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Condition :   Fair  
Principle :   Determination of lattice structure  
Area of Study :  Modern Physics   
Equipment :   5 kV Power Supply, Electron Diffraction Tube (Tel-Atomic), Tube Stand, Camera and Power Supply.
 
Procedure :   Set the unit up as shown and according to the circuit diagram. Turn on the power supply and allow a short time for the filament to warm up. Push up the slide switch and observe the diffraction rings form. Aim the camera at the screen on the end of the tube. See the information in the files about tube parameters and target makeup. (Carbonized Graphite on Ni.)  
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   References
C. J. Calbick, " The Discovery of Electron Diffraction by Davisson and Germer", TPT, Vol. 1, # 2, May 1963, p. 63.

 

John M. Fowler, William Warren, "Lecture Demonstration of Electron Diffraction", AJP, Vol. 30, # 12, Dec. 1962, p. 891. 



Mail Questions and Comments to:  Dale Stille