Is the Sun Positively Charged?

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Discussion Overview

The discussion revolves around the charge of the Sun in the context of hydrogen fusion, specifically the proton-proton chain reaction. Participants explore the implications of positron production during fusion and the maintenance of the proton to electron ratio within the Sun.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant asserts that hydrogen fusion produces two positrons for each helium nucleus, questioning how the Sun maintains a neutral charge despite this.
  • Another participant suggests that the number of protons does not remain constant, indicating that the fusion process results in a net change of protons and neutrons.
  • A different viewpoint posits that the end result of fusion does not lead to a net change in charge, as neutrons can be considered as protons that have lost their positive charge.
  • One participant acknowledges a mistake in their understanding of the proton count during fusion, indicating a potential misunderstanding of the process.

Areas of Agreement / Disagreement

Participants express differing views on the implications of positron production and the resulting charge of the Sun. The discussion remains unresolved regarding the exact mechanism for maintaining the proton to electron ratio and the overall charge state of the Sun.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the fusion process and the definitions of charge states. Some mathematical steps and the implications of neutron behavior are not fully explored.

Plok
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Hydrogen fusion as described by proton-proton chain reaction that dominates in the sun produces two positrons for each helium nucleus produced. These annihilate with free electrons while the number of protons remain the same. Over time the sun is supposed to become positively charged, yet the claim is that its charge is neutral.

What is the mechanism for maintaining the proton to electron ratio in the sun?
Thanks!
 
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Two positrons: two electrons. What's your question?
 
Plok said:
Hydrogen fusion as described by proton-proton chain reaction that dominates in the sun produces two positrons for each helium nucleus produced. These annihilate with free electrons while the number of protons remain the same.
This is the source of your problem-- the number of protons does not stay the same. The net result is 4 protons turn into 2 protons and 2 neutrons in the helium nucleus. The loss in protons matches the annihilation of electrons.
 
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The end result of the reaction is a helium nucleus which contains two neutrons as well as the two protons.
In simplistic terms those neutrons could be considered as protons which lost their positive charge during the fusion process.
So overall no net change of charge has occurred within the Sun.
 
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Thanks, that was embarrassing. I was researching something that touched this topic and must have been so distracted I counted wrong.
 
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Plok said:
Thanks, that was embarrassing. I was researching something that touched this topic and must have been so distracted I counted wrong.

hey, it happens to all of us from time to time

and welcome to the Physics Forums :smile:cheers
Dave
 
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