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Because for nucleur fusion to occur you need a temprature of 10,000,000 degrees C and the inward gravity of a main sequence star, our sun is halfway through its main sequence with about 3,000,000,000,000 years to go until it runs out of hydrogen to fuse into helium and then it turns into a red giant.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoBecause it needs equipment that can contain a gas plasma in a given space whilst heating it to hundreds of millions of deg C, and introducing the nuclear fuel. The most successful tokamak type so far used, the JET (Joint European Torus) has only managed this for a fraction of a second, but fusion did occur. In these experiments so far, the input energy has been much higher than the output energy, so we are a long way from a power plant.
Wiki User
∙ 14y agoBecause you need to heat a gaseous mixture of deuterium and tritium to several hundred million degrees C to make the fusion reaction happen. So far this has only been achieved for less than 1 second.
Wiki User
∙ 14y agoThe difficulties involved in producing a sustainable nuclear fusion reaction focus on the enormous temperatures and pressures, energy in other words, required to initiate and maintain the reaction. It is the same as the inverse of Einstein's equation E = MC2 - if the yield of conversion of mass to energy is enormous energy - enormous energy is required to perform fusion - every more, in fact, because fusion involves light elements, and they have substantially more binding energy. (That is why fusion (hydrogen) bombs have so much more energy than fission (uranium or plutonimum) bombs.)
Wiki User
∙ 13y agoThe difficulty is in maintaining an ionised gas plasma of the reactive components (deuterium and tritium) at a very high temperature where the nuclear fusion reaction will take place. Apart from this, which will eventually be made to happen in a test reactor (see ITER), there is the difficulty of extracting useful power and I'm not sure if anyone has the answer to that.
Wiki User
∙ 13y agoNuclear fusion requires a massive amount of pressure to start and maintain. The Earth, simply does not have the pressure to do that, like the sun does.
Wiki User
∙ 12y agoNuclear fusion is uncommon on Earth because the temperatures
and pressures required to initiate it aren't found here.
Spinal fusion, however, is relatively common on Earth.
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How to make a model of fusion reaction?
There is a nice illustration of solar fusion at the link given below
What is the easiest fusion reaction to make?
Deuterium plus tritium
How does the fuel source solar energy make energy?
The source of solar energy is the sun. The sun contains hydrogen, which by fusion, is converted to helium. The fusion reaction gives off solar energy. See related link.
Why do you use fission reactors not fusion reactors?
No way has yet been found to reach break-even in a controlled fusion reaction and get as much energy out as was needed to put in to start the reaction. To make a reactor you need to go past break-even and release extra energy.
What is the difference between a fission reactor and a fusion reactor?
In simplest terms, nuclear fission involves splitting atoms apart to make energy. Fusion involves smashing atoms together to make energy. Fusion reactors are currently entirely theoretical and do not exist. The main problem with fusion is figuring out how to get more energy out of the process than you put into making the fusion happen. Right now, the sun is the only place where fusion takes place on any meaningful scale.Another Answer:From a power production point of view, i.e. a controlledreaction, it is true that we have not been successful with fusion power. However, from a weapons point of view, i.e. an uncontrolled reaction, we have been successful. This is the basis of the hydrogen bomb. Interestingly, the hydrogen bomb requires so much energy to set it off that we use a fission bomb (the original atomic bomb) to initiate the fusion reaction.
How to make a model of fusion reaction?
There is a nice illustration of solar fusion at the link given below
Where does nuclear fusion occur in a nuclear plant?
No place, we have not yet determined how to make a fusion reactor. Only fusion bombs.
What is the easiest fusion reaction to make?
Deuterium plus tritium
To make a chemical reaction occur the activation energy is the energy that?
initiates the reaction
What is called when hydrogen atoms condense to make helium?
This process is know as nuclear fusion, and it produces heat which can be used to convert water into steam for the purpose of mechanical energy production via a turbine in a nuclear fusion reactors.
Which fusion reaction could possibly result in fusion being a viable source of energy dt reaction dd reaction or protium reaction?
The first one to become successful in man made fusion will certainly be DT, but DD would be better if it could be made to work, as it would avoid the need to make tritium to feed as part of the fuel, and there are unlimited supplies of deuterium in the earth's waters. By "protium" I suppose you mean the proton-proton reaction as in the sun, this is impossible in man made fusion on earth, as it requires a huge volume and very high pressure as exists at the centre of the sun.
Does nuclear fusion occur at 15000000c?
It certainly can. It can also occur at lower or higher temperatures. 15 MK is roughly the core temperature of the Sun. At this temperature the PP chain is dominant, with the CNO cycle contributing roughly an order of magnitude less energy. At around 17 MK the two are roughly equal, and at higher temperatures the CNO cycle becomes dominant. Much below 4 MK, you're not normally going to get significant fusion (there are "cold fusion" techniques that can happen at much lower temperatures, such as muon-catalysed fusion, but these aren't net producers of energy: it takes more energy to make the muons than you can get out of the resultant fusion reaction).
Do fusion reactions provide nuclear power?
No, a fission reaction is not necessary to trigger a fusion reaction, but for us on earth, it is. In the field of nuclear weapons, a fission bomb is needed to create the heat necessary to set off a fusion weapon. We have to use fission, or, rather, the energy created by that, to initiate the fusion reaction. It might be possible to use a high power source, like a laser, on a small amount of material to get fusion to occur. But we are still experimenting with this in the Tokamak, and it's far from being a done deal. Stars are, in general, massive nuclear fusion reactors. Their constant consumption of fuel powering their high rate of fusion creates a massive amount of energy, and the stars' huge gravity keeps this process from blowing the whole thing apart. No fission is needed to sustain this reaction.
How do you make a fusion suit from Metroid?
Metroid does NOT have the Fusion Suit, Metroid Fusion has the Fusion Suit, And no human on earth knows how to make a Fusion Suit.
What respresents the chemical reaction needed to make a compound?
A variety of different ways to make new substances and they are what makes the world. Compounds Difficult to separate; a chemical reaction is needed.
What happens during a fusion?
Atoms of a 'lighter' element collide and 'stick' together to make a heavier element. The most notable reaction, takes place in stars. Where Hydrogen fuses to make Helium, in the process energy is produced. Further fusion then takes place, to make other elements
What must occur to achieve''nuclear fusion''?
a chain reaction
