What happens to neutrons in plasma state?

In summary, when a mol of helium-3 is heated up to become plasma, any neutrons present will either remain bound in the nucleus or leave the plasma and be absorbed by surrounding structures. Plasmas consist of ions and electrons, with the positive particles being nuclei or ions and the negative particles being electrons. They try to recombine, but can leak out of the plasma if they do and are not reionized.
  • #1
Optymistyk
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Let's say we have a mol of hellium-3 and we heat it up until it becomes plasma.
What happens to the neutrons? Wikipedia does not mention anything about them. It only says that "Plasma is loosely described as an electrically neutral medium of unbound positive and negative particles". Just to make sure...
 
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  • #2
Optymistyk said:
Let's say we have a mol of hellium-3 and we heat it up until it becomes plasma.
What happens to the neutrons? Wikipedia does not mention anything about them. It only says that "Plasma is loosely described as an electrically neutral medium of unbound positive and negative particles".Just to make sure...

I think you missed something. When you heat up the gas, depending on the temperature, all you're doing is stripping one or more electrons from the neutral atoms. You are not disassociating the nucleus. That remains intact.

Zz.
 
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  • #3
Plasmas consist of ions and electrons. Many times we just have a hydrogen plasma so there aren't very many neutrons in there. If it's a heavier gas, the neutrons are still stuck to the protons in the nucleus via nuclear forces even after the electrons are stripped away. In something like a tokamak or solar plasmas, you can have neutrons flying around that are produced by fusion reactions. They are unaffected by the electromagnetic field and generally fly in straight lines until they hit a wall and melt your tokamak.
 
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  • #4
Optymistyk said:
Let's say we have a mol of hellium-3 and we heat it up until it becomes plasma.
What happens to the neutrons? Wikipedia does not mention anything about them. It only says that "Plasma is loosely described as an electrically neutral medium of unbound positive and negative particles".

Just to make sure...
Any neutron produced in a fusion plasma will simply leave the plasma and be absorbed by the surrounding structure. As ZapperZ indicated, neutrons bound in a nucleus stay in the nucleus, unless the nucleus collides with another nucleus with sufficient energy to cause a fusion reaction, or a spallation reaction.

Where matter (as opposed to anti-matter) is concerned, e.g., a hydrogen/helium plasma, the positive particles are nuclei (or ions if Z>1 and partially ionized), and the negative particles are electrons. They try to recombine, and if they do, they can leak out of the plasma unless they are ionized again.
 
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1. What is plasma state and how does it differ from other states of matter?

Plasma is often referred to as the fourth state of matter, along with solid, liquid, and gas. It is an ionized gas consisting of positively and negatively charged particles. Unlike other states of matter, plasma does not have a fixed volume or shape, and its particles are not bound together.

2. How are neutrons affected by the presence of plasma?

Neutrons, which are electrically neutral particles found in the nucleus of an atom, are greatly affected by the presence of plasma. In plasma state, the high energy particles can strip electrons away from atoms, resulting in a high number of free neutrons.

3. Do neutrons behave differently in plasma compared to other states of matter?

Yes, neutrons behave differently in plasma compared to other states of matter. In plasma, they are able to move freely and have a much higher energy than in other states. They can also collide with other particles and transfer energy, leading to various nuclear reactions.

4. Can neutrons be used as a diagnostic tool for plasma?

Yes, neutrons can be used as a diagnostic tool for plasma. By measuring the number and energy of neutrons emitted from a plasma, scientists can determine important parameters such as temperature, density, and confinement time.

5. How does plasma state affect the stability of neutrons?

Plasma state can greatly affect the stability of neutrons. In high energy plasma, the collisions between neutrons and other particles can cause them to become unstable and decay into other particles. This instability can also lead to various fusion reactions, playing a crucial role in energy production in stars and fusion reactors.

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