Slides in this set
What is nuclear fusion ?
Nuclear fusion is a type of nuclear reaction in which two light atomic
nuclei, such as tritium and deuterium unite to form a heavier nucleus,
It occurs when the energies of both nuclei
are raised by the application of very high
temperatures. Deuterium is composed of a
proton and a neutron, tritium is composed
of a proton and two neutrons. Both nuclei
are positively charged which means they
naturally repel each other. To overcome that
resistance, the nuclei must be energised
with extremely high temperatures so that
they can collide with force.…read more
What is nuclear fusion ?
As the temperature increases, so does the kinetic energy of each nucleus.
Each nuclei moves randomly at gradually higher speeds. When the
temperature gets high enough the kinetic energy of the nuclei overcomes
the repelling force. And the two collide.
The collision of tritium and deuterium produces a helium nucleus,
composed of two neutrons and two protons. The fusion also produces a
free neutron and a tremendous amount of energy in the form of heat
Where does nuclear fusion happen
Fusion naturally happens in the sun
and in the stars
The sun is a sustained fusion reaction.
In stars, the main fusion reaction is
turning hydrogen into helium
The fission produces massive amounts of
heat and light…read more
Fusion or Fission?
The common fuel for nuclear fusion is Advantages of Fusion
deuterium. Which can be extracted
from ordinary water which is available
to all nations . The surface waters of
· Abundant fuel supply
the earth contain 10 million tons of
deuterium, an inexhaustible source
· Cleaner than fission
· Produces a lot more energy then
· No air pollution
Advantages of Fission
· Easier to produce than fusion
because the temperature doesn'
t have to be as hot
· Fusion has not been developed Since no fossil fuels are used, there
will be no release of chemical
as a good energy source , since combustion products because they
the temperature that is required will not be produced
for fusion to happen are too hot
for any container…read more
Fusion for the future
In the future, nuclear fusion may offer a safer and cleaner alternative. However
scientists have decades of research to do before this becomes a reality.
In may 2006, the USA, EU,
Russia, China, South Korea,
Japan and India signed to help
build the international
Reactor, ITER. Which is located
in the south of France. They
have predicted it to be
functional by 2016…read more