Can there be collision-less acceleration of electrons?

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SUMMARY

The discussion centers on electron cyclotron resonance (ECR) in metals and solids, specifically addressing the concept of collision-less acceleration of electrons. It is established that while electrons do experience collisions, the cyclotron frequency can exceed the collision rate, allowing electrons to complete orbits between collisions. This phenomenon indicates that the mean free path of electrons is greater than the distance required for a complete orbit, thus enabling effective acceleration without continuous collisions.

PREREQUISITES
  • Understanding of electron cyclotron resonance (ECR)
  • Knowledge of collision theory in physics
  • Familiarity with cyclotron frequency concepts
  • Basic principles of solid-state physics
NEXT STEPS
  • Research the mathematical derivation of cyclotron frequency in ECR
  • Explore the implications of mean free path in electron dynamics
  • Study the effects of magnetic fields on electron motion in solids
  • Investigate applications of ECR in materials science and semiconductor technology
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Physicists, materials scientists, and electrical engineers interested in the dynamics of electron behavior in magnetic fields and the principles of electron cyclotron resonance.

AAB1994
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In electron cyclotron resonance of metals/solids can there be electron acceleration without them engaging in collision ? I read the last para of electron cyclotron resonance wikipedia page which stated this
 
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AAB1994 said:
I read the last para of electron cyclotron resonance wikipedia page which stated this

You shouldn't say something like this in this forum without providing a directly link.

Zz.
 
It isn’t saying the electrons never collide. It is saying that the cyclotron frequency is higher than the collision rate so electrons can accomplish complete orbits between collisions.
 
As @Cutter Ketch has stated, it doesn't mean that there are no collisions. It means that the mean free path of the electrons is larger than the length it takes to make one complete orbit.

This clearly illustrates why we require exact citation of the sources. We don't know if you are reading a bad article, or if you're misreading and misinterpreting a correct article.

Zz.
 

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