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When does hydrogen-helium fusion and helium-carbon fusion occur in stars like our sun?
When hydrogen stocks run out
What energies occur in the sun?
The fusion of Hydrogen into Helium.
Why doesnt the helium currently in the suns core undergo fusion?
The helium in the Sun's core does not undergo fusion because it primarily consists of helium-4, which is a product of hydrogen fusion. While temperatures and pressures in the core are extremely high, the conditions required for helium fusion—such as even higher temperatures (around 100 million Kelvin) and sufficient density—are not met until much of the hydrogen has been fused into helium. Helium fusion, known as the triple-alpha process, will occur later in the Sun’s life cycle, once it exhausts its hydrogen fuel.
How does nuclear fusion work when stars produce their own energy?
The fusion of Hydrogen into Helium causes heat and radiation to occur.
How is helium formed in the universe?
Helium is formed in the universe through nuclear fusion processes that occur in stars. During the fusion of hydrogen atoms in the core of a star, helium is produced as a byproduct. This process releases a large amount of energy and is responsible for the creation of helium in the universe.
How does hydrogen fusion occur?
When two hydrogen atoms fuse to become one helium atom.
Where does fusion of hydrogen to helium most commonly occur?
In stars. As far as I know this is the only place.
Why does hydrogen fusion not occur at the surface?
Not enough pressure or temperature.
Does hydrogen fusion occur in the corona?
Hydrogen fusion does not occur in the corona of the sun. Fusion reactions occur in the sun's core where conditions are hot and dense enough for hydrogen nuclei to combine to form helium, releasing energy in the process. The corona is cooler and less dense than the core, so fusion cannot take place there.
What is the order in which elements undergo fusion on the sun?
In the core of the Sun, hydrogen atoms fuse to form helium in a process known as hydrogen fusion. This is the primary fusion process occurring in the Sun. As the core hydrogen is depleted, helium fusion into heavier elements like carbon and oxygen will occur in later stages of the Sun's evolution.
What layer of the sun does fusion occur?
Nuclear fusion occurs in the solar core.
What is the last stage of nuclear fusion for the sun?
Most likely, that will be helium fusion. This is expected to occur when most of the hydrogen in the core has burnt out, and the Sun has expanded into a red giant. The core will then contract, its own weight no longer supported by hydrogen fusion, until the temperature and density has reached sufficient levels to initiate helium fusion. It is expected that the helium fusion will proceed at an initially uncontrolled rate, producing a helium flash. The sun probably has not enough mass to also reach critical levels required for carbon fusion, which would be the next stage in more massive stars.
