Forces on electrons inside a coil

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SUMMARY

The discussion centers on the forces acting on electrons within the focusing coils of an electron microscope, specifically addressing the interaction between magnetic and electric fields. Jose inquires about the electric field's influence on electrons, which are already affected by the magnetic field generated by the coils. The Lorentz Force equation is highlighted as a critical concept for understanding these interactions, emphasizing the need to consider both magnetic and electric forces in electron behavior within the microscope.

PREREQUISITES
  • Understanding of Lorentz Force equation
  • Familiarity with electromagnetic fields
  • Knowledge of electron microscopy principles
  • Basic concepts of particle dynamics in magnetic fields
NEXT STEPS
  • Study the Lorentz Force equation in detail
  • Explore the relationship between electric and magnetic fields in electron optics
  • Research the design and function of focusing coils in electron microscopes
  • Examine the behavior of charged particles in varying electromagnetic fields
USEFUL FOR

This discussion is beneficial for physicists, electrical engineers, and anyone involved in the design or operation of electron microscopes, particularly those interested in the dynamics of charged particles in electromagnetic fields.

kankamuso
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Hi all,

First of all, sorry if this is a dumb question but I just wanted to make sure.

Imagine the body of an electron microscope and the focusing coils on it. I know that due to the generated magnetic fields, the electrons tend to modify its distance to the central axis in a helix-like pattern. Nevertheless, I am not able to find around the effect of the associated electric field on the particle... isn't there any?. Imagine a coil whose magnetic field goes from bottom to top of the microscope, wouldn't the associated electric field tend to stop the electrons?.

Thanks in advance,

Jose.
 
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