[help] about electron-ion collision

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Discussion Overview

The discussion revolves around the dynamics of electron-ion collisions, particularly when ions travel at higher velocities than electrons. Participants explore the mechanisms of energy transport during these collisions and the potential for ionization to occur.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants inquire about the nature of energy transport during electron-ion collisions, especially when ions have higher velocities than electrons.
  • One participant notes that bombarding ions with electrons of sufficient energy can lead to ionization, suggesting that collisions may strip atoms of their electrons.
  • Another participant argues that there is no difference in perspective between an ion traveling at high velocity and an electron, implying that both can be considered stationary relative to each other.
  • Concerns are raised about how an ion, which has much higher energy than an electron, can gain more energy during a collision, with one participant questioning the implications of ionization on the ion's energy.
  • Further clarification is provided that ionization involves an atom losing or gaining electrons, transitioning from a neutral state to a charged state, and that a highly energetic ion could cause additional electrons to be lost from the ion.
  • One participant expresses uncertainty about the flow of energy during the collision process, indicating a need for further understanding.
  • Another participant suggests that if ionization occurs, the electron could gain energy from the ion's kinetic energy.

Areas of Agreement / Disagreement

Participants express various viewpoints on the mechanics of energy transport and ionization during electron-ion collisions, indicating that multiple competing views remain and the discussion is unresolved.

Contextual Notes

There are limitations in understanding the assumptions about energy transfer and the definitions of ionization in the context of high-velocity collisions. The discussion does not resolve these complexities.

ada_ada_2002
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Hi there.
What happens during the electron -ion collision when the velocity of ion is higher than that of electrons? How the energy transports? Can ionization happens?
Thank you so much!
 
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I know that bombarding ions with electrons with sufficient energy can result in ionization. The collisions may tend to strip atoms of their electrons.
 
ada_ada_2002 said:
Hi there.
What happens during the electron -ion collision when the velocity of ion is higher than that of electrons? How the energy transports? Can ionization happens?
Thank you so much!

There is no difference between an ion traveling at high velocities compared to an electron and vice versa. Both the electron and the ion could be "seen" to be stationary in relation to the other.
 
Thank you!
One thing I don't understand is: in this condition, the energy of ion is much much higher than that of electron, how can ion gain more energy? (ionization means ion's energy increases, right?)
 
ada_ada_2002 said:
Thank you!
One thing I don't understand is: in this condition, the energy of ion is much much higher than that of electron, how can ion gain more energy? (ionization means ion's energy increases, right?)

Ionization means that an atom will lose or gain 1 or more electrons and go from a neutral atom to a charged one, either positive or negative charge.
A highly energetic Ion colliding with a static electron could cause further electrons to be lost from the Ion, increasing it's positive charge even further. However I think it is usually the opposite case where an electron collides with an atom or ion and causes ionization.
 
Thank you, Drakkith. I will think about it. I can imagine the picture, I am just not clear about the energy flow/transport in this process.
 
ada_ada_2002 said:
Thank you, Drakkith. I will think about it. I can imagine the picture, I am just not clear about the energy flow/transport in this process.

From your frame the electron gains energy from the ion, and if ionization occurs then it uses the kinetic energy of the ion as well.
 

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