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A fusion barrier refers to the repulsive charge between two nuclei that must be overcome to initiate fusion.

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Q: What do you mean by fusion barrier in nuclear physics?
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Fusion what does it mean?

Fusion is a nuclear physics process. Atomic nuclei with the same charges are joined together, where they form a heavier nucleus. This causes either an absorption or a release of a high amount of energy


Is fusion a type of chemical reaction?

False


What does nuclear fusion mean?

Nuclear fusion refers to a nuclear reaction wherein two light nuclei fuse to form a heavier nucleus. This process releases energy.


What is Coal Fusion?

I think you mean "Cold Fusion" It is the (currently) hypothetical nuclear fusion reaction which happens at ambient temperatures?


Nuclear reactions at very high temperature is known as?

You probably mean nuclear fusion


How are they different from regular nuclear reactors?

Please elaborate on "they" as no comparison can be given otherwise. Do you mean?: "How is nuclear fusion different from regular nuclear reactors (nuclear fission?)"


When nuclei joins together such on the sun?

I think you mean nuclear fusion, the reaction that powers the sun.


How fast does a nuclear fusion reactor work?

Do you mean how much power does it produce? None are working as yet.


What do you mean by nuclear accidents and can you explain two basic types of nuclear weapons?

A nuclear accident is the unintended release of nuclear radiation into the environment, such as damage to a nuclear reactor or to a nuclear weapon (plane crash carrying nuclear bombs, etc). The two basic forms of nuclear weapons are fission and fusion weapons.


What happens when energy from a nuclear fusion hits water?

By a nuclear fusion you must mean an H-Bomb. This releases tremendous heat energy so it will vaporise a lot of water if it explodes near the surface. The shock wave will also cause massive waves to be created.


Is the nuclear bomb more powerful than the hydrogen bomb?

Nuclear bomb can mean either fission or fusion bomb. Hydrogen bomb means fusion bomb. The fusion bomb can be built with any yield one wants, just by adding more stages with more fuel. The fission bomb has a theoretical maximum yield that cannot be exceeded.


What energy produces sun energy?

Not sure what you mean... The Sun gets its energy from nuclear fusion; the original energy is the potential energy (nuclear energy, in this case) stored in the hydrogen-1 nuclei.