What is Nuclear Energy?

Nuclear energy will be one of the alternative sources of energy in the future. Nuclear energy is the heat energy produced from the changes in an unstable nucleus. A large amount of nuclear energy is produced when a heavy nucleus splits in two light nuclei join to form a heavier nucleus.

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What is Nuclear Energy?

Fossils fuels such as petroleum, natural gas and coal are the major sources of energy in the world. These natural fossil resources are depleting fast but the worldwide consumption of fossils fuels is high and keeps on increasing. When there is a shortage of fossil fuels is high and keeps on increasing. This will increase the production cost of electrical energy. The increase in the cost of electrical will increase the price of goods.

Renewable energy will be an important source of energy in the future. Electrical energy is generated in hydroelectric power plants. Solar energy is being used in some remote areas. Oil palm refinery plants also use biomass to generate electrical energy. Renewable energy generated from the wind or waves is not used in our country.

Nuclear energy will be one of the alternative sources of energy in the future. Nuclear energy is the heat energy produced from the changes in an unstable nucleus. A large amount of nuclear energy is produced when a heavy nucleus splits in two light nuclei join to form a heavier nucleus (nuclear fusion).



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Nuclear Fission

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Nuclear fission is a process where an unstable and heavy nucleus is bombarded by a neutron, causing it to split into two (or more) lighter nuclei together with the release of neutrons and energy. The two nuclei are called fission products.

The total mass after nuclear fission is slightly lower than the mass before fission. The loss in mass is converted into a large amount of nuclear energy and neutrons are released.

 


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Nuclear fission can only occur in some types of heavy and unstable nuclei such as in the uranium -235 and plutonium -239.

When a slow-moving neutron bombards a uranium -235 nucleus, the uranium -235 will split into two lighter nuclei, which is the barium -141 nucleus and the krypton -92 nucleus. Two or three neutrons, together with nuclear energy are also produced.

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The neutrons which are produced will bombard more uranium -235 nuclei. This will produce more neutrons and more nuclear energy is released. The process of bombardment will repeat and the release of neutrons is repeated, resulting in a chain reaction.

An uncontrolled chain reaction happens during the explosion of an atomic bomb. The Hiroshima and Nagasaki atomic bomb explosions during world War II released a large amount of nuclear energy and radioactive radiation which caused a great loss of human lives and property.

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In a nuclear reactor, the number of chain reactions is controlled to determine the amount of nuclear energy that will be produced. The boron rods inside a nuclear reactor absorb neutrons. This will control the number of neutrons that bombard the uranium -235 nuclei.

The speeds of neutrons are slowed down by the graphite core. The fission of uranium -235 is more likely to occur with slow neutrons than with fast neutrons.

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Nuclear Fusion

Nuclear fusion is a process where two light nuclei to form a heavier, more stable nucleus together with the release of a large amount of nuclear energy. Enriched uranium fuel that has a higher proportion of uranium -235 is used in the production of nuclear energy.

The heat and light energy from the Sun is due to the fusion of hydrogen atoms at a very high temperature and pressure.

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In nuclear fusion, hydrogen -2 (deuterium) and hydrogen -3 (tritium) are combined at a very high temperature and pressure to produce a heavier helium nucleus. A neutron and a large amount of nuclear energy are produced.

However, the atomic mass loss in nuclear fusion is slightly more than that of nuclear fission. Hence nuclear fusion will produce more nuclear energy than nuclear fission.

Normally hydrogen -2 and hydrogen -3 isotopes are used in nuclear fusion.

Nuclear fusion is used to make hydrogen bombs. Hydrogen bombs release more nuclear energy than atomic bombs.

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The Advantages and Disadvantages of Nuclear Fusion

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The advantages of nuclear fusion are: a) it produces more nuclear energy than nuclear fission. b) It produces less radioactive radiation than nuclear fission.

The disadvantages of nuclear fusion are: a) the rate of nuclear fusion cannot be controlled whereas the rate of nuclear fission can be controlled. b) Nuclear fusion occurs at a very high temperature and pressure that is difficult to achieve.

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29 Responses to “What is Nuclear Energy?”

  1. Hari678 Says...

    On June 10, 2009 at 10:57 am

    The article is not only good and academic but also very nice to expose the difference between nuclear fission and fusion, the process of which are the subject of the 21st century. Energy is for improvement or for destruction; the choice lies with the intellectuals of the present generation. Thanks a lot for sharing.


  2. Pinaki Ghosh Says...

    On June 10, 2009 at 11:23 am

    great read.


  3. goodselfme Says...

    On June 10, 2009 at 11:23 am

    Your presentation is excellent with interest directed for everyone’s education.Well done!


  4. Sheila M Says...

    On June 10, 2009 at 11:26 am

    May not be the most fun article for me to read but it was very informative and very well written ~ kudos


  5. CHAN LEE PENG Says...

    On June 10, 2009 at 11:32 am

    Your presentation is EXCELLENT!Fly you a “like it”.


  6. 101 Says...

    On June 10, 2009 at 11:59 am

    Really great article. as well as informative. great factual information in this fine presentaion! always,Gary La Buda


  7. Christine Ramsay Says...

    On June 10, 2009 at 12:42 pm

    I wondered where nuclear energy came from. This is an excellent and beautifully presented article. Well done.

    Christine


  8. California Dreamer Says...

    On June 10, 2009 at 1:14 pm

    Enjoyed :) , never really thought of where my energy came from, was nice to read and learn something more :)


  9. Kate Smedley Says...

    On June 10, 2009 at 1:27 pm

    Well researched, informative, educational and well written as always.


  10. ken bultman Says...

    On June 10, 2009 at 2:22 pm

    Magnificent! You are on our side, aren’t you?


  11. George W Whitehead Says...

    On June 10, 2009 at 2:34 pm

    Great, informative article Mr Ghaz.


  12. Joe Dorish Says...

    On June 10, 2009 at 3:01 pm

    Learned a lot from this well done article Mr Ghaz.


  13. Ruby Hawk Says...

    On June 10, 2009 at 5:59 pm

    Mr.Ghanz, I don’t want nuclear energy. I know it doesn’t matter what I want. We have some now and I feel sure we will havemore and more of it. I am afraid of all the waste and where it will be stored. there is no safe place to store it and sooner or later it will be loose and upon us.


  14. Unofre Pili Says...

    On June 10, 2009 at 7:34 pm

    This is very informative Mr. Ghaz. Very well-presented.


  15. SpencerC Says...

    On June 10, 2009 at 8:04 pm

    Great article! Very informative, thanks for sharing.


  16. Radhika Says...

    On June 10, 2009 at 10:16 pm

    Very Informative!!!!!!


  17. Glynis Smy Says...

    On June 11, 2009 at 12:34 am

    I was a Nuclear Medicine nurse and injected patients daily with isotopes. Treated with respect it is a powerful treatment.
    Interesting article.


  18. jamie mullen Says...

    On June 11, 2009 at 2:40 am

    You do great science related articles.


  19. Sherry Says...

    On June 11, 2009 at 10:45 am

    Excellent article, mrghaz.


  20. rizzei Says...

    On June 11, 2009 at 11:16 am

    nice topic and illustrations..this is really informative..we are also thought these kinds of things in school but i barely listen..:)


  21. OhSugar Says...

    On June 11, 2009 at 11:26 am

    Another fantastic and interesting presentation. I am always excited to read your work.


  22. MassterGee Says...

    On June 11, 2009 at 4:21 pm

    This article, while explaining a bit on an interesting topic, did only that. That is to say, it only explained a bit. Take out all the irrelevant pictures, and state the relevant information once and only once, and this wouldn’t be long enough to publish. Please work on adding more actual information to your writing, remember, quality not quantity.


  23. papaleng Says...

    On June 12, 2009 at 9:13 am

    My friend this is an excellent article worth reading again and again. it is so educational.


  24. Poetic Enigma Says...

    On June 12, 2009 at 11:57 pm

    Very well presented,
    This is a great article.
    Very informative!


  25. june Says...

    On June 13, 2009 at 1:44 am

    very interesting, considerable work went into it.


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  27. Jo Oliver Says...

    On June 13, 2009 at 10:10 am

    You covered this complex subject very well. thank you for the breakdown on what nuclear energy is!


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  29. Cynthia Bartlett Says...

    On June 19, 2009 at 11:15 pm

    That’s all well and good;however, we do need an alternative fuel source. Many science fiction writers had some interesting ideas. The one I liked the most was in the movie “Back to the Future” (not sure if it was the very first one or not) where the flux capacitor ran on trash conversion. Maybe the marijuana plants could be used for an alternative fuel source or coffee beans or any other drug that “wires humans for sound,” The way some people bounce off the walls, why couldn’t that be placed in the fuel tank? I don’t what the answer is, but I believe humans will make a lot of errors and not only in judgment before they find the answer.


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