Blurness of rings in electron diffraction

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SUMMARY

The discussion focuses on the blurriness of rings observed in electron diffraction experiments, particularly the innermost ring. Participants suggest that the blurriness may stem from similar principles affecting fringe clarity in Young's interference patterns. The clarity of the diffraction rings is contingent on the specifics of the experimental apparatus used, indicating that equipment quality and setup play a crucial role in achieving precise measurements.

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  • Understanding of electron diffraction principles
  • Familiarity with Young's interference experiment
  • Knowledge of experimental apparatus used in electron diffraction
  • Basic concepts of wave optics
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Physics students, experimental physicists, and researchers involved in electron diffraction studies who seek to improve measurement accuracy and understand the factors affecting diffraction patterns.

hoshizora
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Hi guys,

I just did an experiment about electron diffraction the other day, and I had a really difficult time measuring the radii of the rings because they were quite blurred at the edges. Anyone knows why they are so blur, especially for the first (innermost) ring?
 
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Welcome to PF;
The probably blur for similar reasons that the fringes in Youngs interference are blurry.

Does the theory predict definite clear boundaries for the rings?
 
hoshizora said:
Anyone knows why they are so blur, especially for the first (innermost) ring?

It depends on the apparatus. Can you give us more details about the apparatus?
 

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