What happens when an electron is hit by a laser beam?

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Discussion Overview

The discussion revolves around the interaction between an electron and a laser beam, specifically examining what occurs when an electron in a vacuum encounters a laser. The scope includes theoretical aspects of electron behavior, scattering phenomena, and potential applications in particle acceleration.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the effects on an electron when it intercepts a laser beam, including potential changes in angle and the feasibility of using lasers for particle acceleration instead of electric fields.
  • Another participant notes that an electron can scatter light, transferring momentum and conserving the total momentum of the electron-photon system.
  • A participant seeks clarification on the specific direction of scattering when an electron is exposed to a laser, pondering whether lasers can guide electrons or if scattering occurs in all directions.
  • One participant asserts that it is possible to guide an electron with a laser, but clarifies that this guidance does not occur in every direction, specifically stating that electrons cannot be drawn toward the laser.

Areas of Agreement / Disagreement

Participants express differing views on the specifics of electron scattering and guidance by lasers, indicating that the discussion remains unresolved regarding the exact nature of these interactions.

Contextual Notes

There are limitations in the discussion regarding the assumptions about electron behavior in laser fields, the definitions of scattering angles, and the conditions under which guidance is possible.

The_Thinker
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Just a quick question. We know that an accelerated electron shoots out light, and light that falls on an electron in an atom, excites it. But what happens to an electron in vaccum, when it encounters a laser beam?

If an electron beam from an electron microscope, were to to intercept a laser beam, what would happen?

Would the beam be shifted in angle? And why if they are can lasers be used to accelerate particles in a particle accelerator instead of using an electric field?
 
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An electron can scatter light. The scattered light can transfer some momentum the electron, such that total momentum of the electron-photon system is conserved.

Ha e you heard of a light sail? If not, then Google it.
 
Light sails use mirrors, I was aware of them before. But I am specifically asking what direction an electron would be scattered in, in the presence of a laser.

Can a laser be used to guide an electron for instance? Or does the scattering take place in all angles?
 
Yes you can guide an ekectron with a laser.

Edit, but not every direction. You can't draw the electron toward the laser.
 

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