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For nuclear fusion to occur, the temperature must reach millions of degrees Celsius. This is necessary to overcome the electrostatic repulsion between positively charged atomic nuclei and facilitate the fusion process.
In a tokamak on Earth, the plasma of deuterium and tritium mixture is heated to several hundred million degC. In the sun the fusion reaction is rather different because of the intensely high pressure (due to gravity) at the sun's centre, and such high temperatures are not necessary to start fusion.
The temperature required for fusion varies depending on the substances being fused.
The threshold temperature for hydrogen fusion, sometimes referred to as the proton-proton chain, is 10-14 million K (Kelvin). The Sun's core is approximately 15,700,000 Kelvin.
In man-made fusion the plasma has to reach at least 100 million deg C before the deuterium/tritium reaction will proceed
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What is the easiest fusion reaction to make?
The easiest fusion reaction to make is between deuterium and tritium, two isotopes of hydrogen. This reaction requires the least amount of energy to initiate and is being pursued for fusion energy research.
Why does the plasma in a fusion reactor need to be very hot?
The plasma in a fusion reactor needs to be very hot to achieve the high temperature and pressure conditions required to overcome the electrostatic repulsion between positively charged atomic nuclei and initiate the fusion reaction. This high temperature allows the atomic nuclei to collide with enough energy to overcome the electrostatic barrier and fuse together, releasing energy in the process.
What type of nuclear reaction takes place in stars?
Nuclear fusion is the type of nuclear reaction that takes place in stars. This reaction involves the fusion of hydrogen atoms to form helium, releasing a large amount of energy in the process.
How is fusion used in a hydrogen bomb?
In a hydrogen bomb, fusion is used to release a large amount of energy through the fusion of hydrogen isotopes to create helium. This process, known as thermonuclear fusion, generates a massive explosion by harnessing the immense energy released during the fusion reaction. The process is initiated by a fission reaction that creates the high temperatures and pressures needed for fusion to occur.
Which pair of nuclei can undergo a fusion reaction?
Hydrogen-2 (deuterium) and hydrogen-3 (tritium) nuclei can undergo fusion to form helium-4, releasing a neutron in the process. This fusion reaction is the basis for fusion energy production in potential future reactor designs.
Is fusion a chemical?
No, fusion is a type of nuclear reaction.
What happens when a fusion reaction is uncontrolled?
fusion bomb explosion
Is fusion chemical nuclear or mechanical?
Fusion is a nuclear reaction.
Is fusion a type of chemical reaction?
False
Is the sun a hot fusion or cold fusion?
Yes
Describe what takes place in a nuclear fusion reaction?
In nuclear fusion reaction two nuclei are combined by providing the energy.
What is the opposite reaction to fusion?
fission
What does fusion have to do with the sun?
Nuclear reaction
Can fusion take place in the nucleus of a uranium atom?
Not fusion, but a fission reaction.
What type of reaction occurs when a thermonuclear bomb explodes?
A fusion reaction.
Where does the fusion reaction occur in the sun?
Fusion occurs in the core of the sun and other stars.
What is the easiest fusion reaction to make?
The easiest fusion reaction to make is between deuterium and tritium, two isotopes of hydrogen. This reaction requires the least amount of energy to initiate and is being pursued for fusion energy research.
