Moving electrons: magnetic and electric fields

Click For Summary
SUMMARY

The discussion centers on the interaction of moving electrons and the resultant electric and magnetic fields. It is established that both electric and magnetic fields can coexist around a line of moving electrons, such as those in a vacuum tube or at facilities like the Stanford Linear Accelerator Center. The presence of electric fields is confirmed even when electrons are in motion, particularly in structured bunches, as seen in klystrons and similar devices.

PREREQUISITES
  • Understanding of electromagnetic theory
  • Familiarity with electric and magnetic fields
  • Knowledge of particle acceleration techniques
  • Basic principles of vacuum tubes and their applications
NEXT STEPS
  • Research the principles of electromagnetic field theory
  • Explore the operation of klystrons and their applications in microwave technology
  • Study the behavior of charged particles in vacuum tubes
  • Learn about the Stanford Linear Accelerator Center and its research on particle physics
USEFUL FOR

Physicists, electrical engineers, and students studying electromagnetism or particle physics will benefit from this discussion, particularly those interested in the behavior of electrons in motion and their associated fields.

ninjadrummer8
Messages
24
Reaction score
0
Ok I have a general question. Say I have a bunch of electrons moving in a line, not in a wire, but I guess it could be looked at as if it was in a wire.

This is my question: So if i picked a point outside of this line of moving electrons, would I find an electric field?

I know that there is a magnetic field for sure, and I know that if the electrons were NOT moving, that there would be an electric field. What I'm not sure of is if the magnetic field replaces the electric field or not.
 
Physics news on Phys.org
Yes.

You can have both kinds of fields simultaneously.
 
If you consider bunches of electrons traveling at (nearly) the speed of light in a vacuum tube (for example at the Stanford Linear Accelerator Center), the bunched structure of the electrons gives rise to electric fields. The same is true for a certain class of microwave electron tubes called klystrons.
 

Similar threads

Undergrad Does a time varying magnetic field in vacuum produce electric field or not?
  • · Replies 7 ·
Replies
7
Views
2K
High School Thought Experiment on Charge Carriers and Electrical Conduction
  • · Replies 3 ·
Replies
3
Views
1K
High School Magnetic field produced by an electric current
  • · Replies 5 ·
Replies
5
Views
2K
High School How Does the Electric Field of a Moving Charge Appear?
  • · Replies 29 ·
Replies
29
Views
3K
Undergrad Induced electric fields and induced magnetic fields confusion
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Why Doesn't Electric Force Cause Wires to Move?
  • · Replies 15 ·
Replies
15
Views
2K
Undergrad Question on Hall Effect and magnetic force
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Electret with circular electric field
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Hall effect -- is it always applicable?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Charge movement relative to magnetic field frame dependence/invariance
  • · Replies 5 ·
Replies
5
Views
2K