- #1
Quantum Velocity
- 73
- 6
If star start from a big ball of hidrogen and the all the neutron to make helium.
Thx for help!
Thx for help!
Where do neutrons in the sun come from?
In summary, deuterium is produced when two protons combine to form a positron and a neutrino, and is used in nuclear reactors to keep the neutrons inside the reactor.
- #2
anorlunda
Staff Emeritus
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That's a fair question.
First, there was some Helium produced in the big bang, so not 100% of the first stars was Hydrrogen. But I think the real answer to your question is this:
First, there was some Helium produced in the big bang, so not 100% of the first stars was Hydrrogen. But I think the real answer to your question is this:
https://en.wikipedia.org/wiki/Nuclear_fusion#Nuclear_fusion_in_stars said:
- #3
Quantum Velocity
- 73
- 6
what is neutrion
- #4
Quantum Velocity
- 73
- 6
by the way thanks for helping me understand
- #5
anorlunda
Staff Emeritus
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Quantum Velocity said:
A neutrino is a very strange particle with just a tiny bit of mass.
See https://en.wikipedia.org/wiki/Neutrino
There are very many kinds of subatomic particles. Do you want to learn more about them in general? If yes, I'm sure that other PF members can recommend a tutorial or a starting textbook.
- #6
Quantum Velocity
- 73
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Yes plsanorlunda said:
- #7
anorlunda
Staff Emeritus
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Someone please help this person with a recommended tutorial, textbook or someplace for him to learn.
- #8
jamesuad
- 4
- 1
In the Sun, deuterium-producing events are rare. Diprotons are the much more common result of proton-proton reactions within the star, and diprotons almost immediately decay back into two protons. Since the conversion of hydrogen to helium is slow, the complete conversion of the hydrogen in the core of Earth's Sun is calculated to take more than 1010 (ten billion) years.
- #9
Quantum Velocity
- 73
- 6
What is deuterium-producing
- #10
Nugatory
Mentor
- 14,829
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Deuterium is the isotope of hydrogen with one neutron and one proton. It can be produced by the reaction at the top in the diagram anorlunda posted above: two protons combine, emitting a positron and and a neutrino and turning into deuterium.Quantum Velocity said:
- #11
jamesuad
- 4
- 1
Quantum Velocity said:
Deuterium is produced for industrial, scientific and military purposes, by starting with ordinary water—a small fraction of which is naturally-occurring heavy water—and then separating out the heavy water by the Girdler sulfide process, distillation, or other methods.
In theory, deuterium for heavy water could be created in a nuclear reactor, but separation from ordinary water is the cheapest bulk production process
The world's leading supplier of deuterium was Atomic Energy of Canada Limited, in Canada, until 1997, when the last heavy water plant was shut down. Canada uses heavy water as a neutron moderator for the operation of the CANDU reactor design.
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- #12
Leonardo Machado
- 57
- 2
Neutron drip and inverse beta decay are possibilities.
But it depends of its density, nêutron drip occours above a level of density that i believe only happen in compact stars
But it depends of its density, nêutron drip occours above a level of density that i believe only happen in compact stars
1. What is the source of neutrons in the sun?
The source of neutrons in the sun is nuclear fusion. During the fusion process, hydrogen atoms combine to form helium, releasing energy in the form of photons. A small percentage of these photons are then converted into neutrons through a process called pair production.
2. How do neutrons contribute to the sun's energy production?
Neutrons do not directly contribute to the sun's energy production. However, they play a crucial role in the nuclear fusion process by interacting with protons to form deuterium, which then fuses with other deuterium atoms to form helium. This fusion process releases a vast amount of energy, which is what powers the sun.
3. Are neutrons constantly produced in the sun?
Yes, neutrons are constantly being produced in the sun through the process of nuclear fusion. However, the rate of production is relatively low compared to other particles, such as protons and photons.
4. Do neutrons in the sun eventually decay?
Yes, neutrons in the sun can eventually decay. However, the timescale for this decay is extremely long, estimated to be around 14 minutes. This is due to the fact that neutrons in the sun are constantly being replenished through the fusion process.
5. Can neutrons be found in other stars aside from the sun?
Yes, neutrons can be found in other stars aside from the sun. In fact, neutrons play a crucial role in the energy production of all main-sequence stars. However, the exact mechanisms of neutron production may vary depending on the type and size of the star.
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