High Energy Electron Greetings: Creation of Extra Particles?

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Discussion Overview

The discussion revolves around the phenomenon of particle creation when a high energy electron collides with a target material. Participants explore the implications of this process, particularly regarding the emergence of multiple particles, including electrons and positrons, and the concept of energy conversion as described by Einstein's equation.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that when a high energy electron collides with a target, it results in the creation of additional particles, specifically three electrons and a positron, suggesting these particles are created from "nothing."
  • Others argue against the notion of creation from nothing, stating that the particles are generated from the energy of the incoming electron, referencing Einstein's equation, ##E=mc^2##.
  • One participant proposes that five particles emerge from the collision, including three electrons, a positron, and a cation, emphasizing the importance of charge conservation in the process.
  • Another participant questions the phrase "created out of nothing," suggesting it may lead to confusion and lacks additional meaning.

Areas of Agreement / Disagreement

Participants express differing views on the interpretation of particle creation, with some supporting the idea of creation from energy and others contesting the phrasing of "nothing." The discussion remains unresolved regarding the implications of these interpretations.

Contextual Notes

Participants have not fully explored the underlying assumptions about energy conservation and particle interactions, nor have they resolved the implications of charge conservation in their claims.

Mizies
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greetings..

i have 1 question:
When a very high energy electron hits a target material, four particles emerge from the target, that is three electrons and a positron, instead of just two electrons, the incident and ejected electrons. It seems that the two extra particles are created out of nothing. Do you agree with this statement?
 
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Mizies said:
greetings..
When a very high energy electron hits a target material, four particles emerge from the target, that is three electrons and a positron, instead of just two electrons, the incident and ejected electrons. It seems that the two extra particles are created out of nothing. Do you agree with this statement?

No. They are created, via Einstein's famous ##E=mc^2##, from the energy of the incoming electron.
 
Mizies said:
i have 1 question:
When a very high energy electron hits a target material, four particles emerge from the target, that is three electrons and a positron, instead of just two electrons, the incident and ejected electrons. It seems that the two extra particles are created out of nothing. Do you agree with this statement?
I would say 5 particles emerge. 3 electrons, a positron, and a cation. The cation is important because it is required for conservation of charge. The net charge before the collision is -1 and the net charge afterwards is also -1. All other quantities are also conserved.
 
Mizies said:
It seems that the two extra particles are created out of nothing. Do you agree with this statement?

The description of what happens is correct. "Created out of nothing" is just a set of words. I do not think there is any additional meaning here, just opportunities for confusion.
 

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