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In the sun and other stars it occurs by protons reacting together to produce helium nuclei. See link below. On Earth experimenters are trying to fuse nuclei of deuterium and tritium as the best combination for success, but only very short (less than 1 second) bursts have so far been achieved.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoNuclear fusion occurs when nuclei are pressed (fused) together so closely that the strong atomic force takes over and causes protons to attract one another, forming new atoms of different types. In order for this to occur, the nuclei must be superheated so as to be fully ionized, i.e. have all of its electrons removed, so they won't interfere. Then, great pressure has to be brought to bear in order to overcome the repulsive effect of the electromagnetic force, allowing the strong interaction to take over.
This is "easy" in the Sun - gravity does all the work - but on Earth, we have not been able to achieve a sustained, controlled fusion reaction to date, because of the problem of containment. - No container is able to hold the superhot, superdense plasma necessary for the fusion reaction to take place. Efforts are underway to use magnetic containment, in the ITER, but that is still highly experimental.
Wiki User
∙ 14y agoNo, that is fission. Fusion is when nuclei join together
Wiki User
∙ 13y agoFission occurs when you split an atom, and Fusion occurs when smaller nuclei of different atoms combine to make a larger nucleus.
Wiki User
∙ 13y agoThe joining of two Hydrogen isotope nuclei to form Helium, which releases a lot of energy
Wiki User
∙ 13y agoJoin together (fuse)
Wiki User
∙ 14y agoThey form another large stable nucleus.
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How is the production of electricity by fission better than nuclear fusion?
In principle fusion should be better for the environment because it does not produce the active fission products. The snag is that it has not been made to work yet, and won't be for many years to come, so as a practical way of producing electricity it does not come into play, and we have to say fission is better than a non-existent fusion
Which do you currently use nuclear fusion or fission?
Fission
Is energy released during fission but absorbed during fusion?
Energy is released during fusion and fission.
What isdifference nuclear fission and nuclear fission?
The difference between Fusion and Fission is that Fission is easier to do and produces more energy than fusion reactions. However fission can be dangerous and is used in Nuclear reactors. Fusion however is safer and produces less energy but safely. It is quite difficult to cause a Fusion reaction however.
Does fusion reaction occur in an atomic bomb?
They have a starter in a bomb and what this will do is shoot a neutron in the nuclear fuel starting a chain reaction
What is sun fission?
Fission does not occur in the sun, it is fusion which produces the sun's energy
When does fission occur in a star?
Never, only fusion
Where in space do fission and fusion happen?
Strictly speaking nowhere in space, because space has no matter in it. Fusion happens in the stars. Fission may occur in some planets somewhere in the universe but not in our solar system
Can fision occur in a star?
Not typically. When a star burns it starts with fusion of Hydrogen. Later heavier atoms are formed, also by fusion. It is believed that the very heavy atoms, that release energy when split (fission) are only formed by very massive stars . These atoms are also formed by fusion. When one of these very massive stars explodes (super nova) it spews out its atoms and during this process its possible some fission will occur, but for the most part star evolution is a fusion story.
Is it a fission or fusion reaction?
Fission and fusion are different nuclear reactions.
Is fission and fusion opposite?
No, fission and fusion are not opposites. Fission is defined as the act of splitting into parts and fusion is defined as a coalition of factions or the act of fusing.
How is the production of electricity by fission better than nuclear fusion?
In principle fusion should be better for the environment because it does not produce the active fission products. The snag is that it has not been made to work yet, and won't be for many years to come, so as a practical way of producing electricity it does not come into play, and we have to say fission is better than a non-existent fusion
Is reaction on sun a fusion or fission?
fission..sup
Is atomic bomb fission or fusion?
Fission.
Which do you currently use nuclear fusion or fission?
Fission
Is energy released during fission but absorbed during fusion?
Energy is released during fusion and fission.
What isdifference nuclear fission and nuclear fission?
The difference between Fusion and Fission is that Fission is easier to do and produces more energy than fusion reactions. However fission can be dangerous and is used in Nuclear reactors. Fusion however is safer and produces less energy but safely. It is quite difficult to cause a Fusion reaction however.
