Requires a lot of heat and pressure for the process to happen. 92 examples: If so, there was no need to conjecture the occurrence of a novel phenomenon of… { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, She was a fusion of the dreamer and doer. 3. These features, coupled with high-density energy output, will make them ideal for powering mega-cities. Fusing two light nuclei can liberate as much energy as the fission of 235 U or 239 Pu. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776342', position: 'btf' }}, The word in the example sentence does not match the entry word. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot3_flex' }}, { bidder: 'sovrn', params: { tagid: '448836' }}, Example of Nuclear Fusion For example, the temperature at the … She was a fusion of the dreamer and doer. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot2_flex' }}, 38 sentence examples: 1. {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, However, the daughter nuclei may still be radioactive. The nuclei fuse together, and energy is released. RSS. At this temperature. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot2_flex' }}, enableSendAllBids: false, Examples of nuclear fusion in a sentence, how to use it. In its core, the Sun fuses 620 million metric tons of hydrogen each second. }); The sun is one of the best examples of nuclear fusion. It is hoped that fusion can produce enormous amounts of energy from relatively small machines. The actual process combines hydrogen nuclei (ie protons) to produce helium. googletag.pubads().enableSingleRequest(); userSync: { { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, var pbMobileLrSlots = [ { bidder: 'ix', params: { siteId: '195455', size: [300, 250] }}, { bidder: 'sovrn', params: { tagid: '446385' }}, There could be a sudden breakthrough in nuclear fusi { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot4_flex' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, Whether the reaction is exothermic or not, it is dependent on the binding energy of resulting nuclei. "noPingback": true, },{ { bidder: 'appnexus', params: { placementId: '11654151' }}, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, googletag.pubads().collapseEmptyDivs(false); {code: 'ad_contentslot_4', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, 2. { bidder: 'openx', params: { unit: '539971067', delDomain: 'idm-d.openx.net' }}, { bidder: 'sovrn', params: { tagid: '448837' }}, These examples are from corpora and from sources on the web. { bidder: 'openx', params: { unit: '539971074', delDomain: 'idm-d.openx.net' }}, { bidder: 'ix', params: { siteId: '195453', size: [320, 100] }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, Every star in the universe, including the sun, is alive due to nuclear fusion. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, The released energy reaches Earth in the form of electromagnetic radiation. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, pbjs.setConfig(pbjsCfg); 223+2 sentence examples: 1. dfpSlots['topslot_a'] = googletag.defineSlot('/2863368/topslot', [], 'ad_topslot_a').defineSizeMapping(mapping_topslot_a).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); } bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776338', position: 'btf' }}, iasLog("criterion : cdo_tc = resp"); Nuclear fusion is achieved by combining two isotopes of hydrogen: deuterium (H-2) and tritium (H-3) in high density, high temperature environment. The journal covers all aspects of research, theoretical and practical, relevant to controlled thermonuclear fusion. googletag.pubads().addEventListener('slotRenderEnded', function(event) { if (!event.isEmpty && event.slot.renderCallback) { event.slot.renderCallback(event); } }); Because that is what is happening. { bidder: 'ix', params: { siteId: '195454', size: [336, 280] }}, All good things come with speculation. { bidder: 'appnexus', params: { placementId: '11654195' }}, It also produces and consumes tritium within the plant in a closed circuit. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_leftslot' }}]}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, Because nuclear reaction rates depend on density as well as temperature and most fusion … bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776342', position: 'btf' }}, Nuclear Fusion Example The temperature at the sun’s core is approximately 15 million degrees Celsius. Nuclear fusion takes place naturally, such as in stars like the sun. { bidder: 'appnexus', params: { placementId: '11654195' }}, { bidder: 'ix', params: { siteId: '195457', size: [320, 100] }}, The sun is one of the best examples of nuclear fusion. 5. { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, params: { 5. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, ­NASA is currently looking into developing small-scale fusion reactors for powering­ deep-space rockets. { bidder: 'ix', params: { siteId: '195459', size: [300, 50] }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, In cases where the interacting nuclei belong to elements with low atomic numbers (e.g., hydrogen [atomic number 1] or its isotopes deuterium and tritium ), substantial amounts of energy are released. { bidder: 'ix', params: { siteId: '195459', size: [320, 100] }}, 'max': 36, pid: '94' Contains Parliamentary information licensed under the. Nuclear Fusion Power (Updated November 2020) Fusion power offers the prospect of an almost inexhaustible source of energy for future generations, but it also presents so far insurmountable engineering challenges. An example of a nuclear reaction chain that can occur is: (10.7.6) He 2 4 + He 2 4 → Be 4 8 + γ, (10.7.7) Be 4 8 + He 2 4 → C 6 12 + γ, {code: 'ad_contentslot_4', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 100], [320, 50], [300, 50]] } }, Nuclear Fusion: Nuclear Fusion is a reaction that occurs when two atoms combine together to form one or more different atomic nuclei and subatomic particles like protons and neutrons. { bidder: 'openx', params: { unit: '539971070', delDomain: 'idm-d.openx.net' }}, }], { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, 'cap': true Nuclear fusion occurs when two small, light nuclei join together to make one heavier nucleus. Conditions supporting nuclear fission includes the critical mass of the substance and neutrons. As the nuclei of two light atoms are brought closer to each other, they become increasingly destabilized, due to the electric repulsion of their positive charges. For fast neutrons its fission cross-section is on the order of barns. dfpSlots['leftslot'] = googletag.defineSlot('/2863368/leftslot', [[120, 600], [160, 600]], 'ad_leftslot').defineSizeMapping(mapping_leftslot).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'left').addService(googletag.pubads()); { bidder: 'appnexus', params: { placementId: '11654153' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, noun. The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_mpuslot3_mobile_flex' }}, {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, It is summarized in Figure 14-1, which is analogous to Figure 13-2 for nuclear fission. Whether nuclear fusion produces a substantial amount of energy for the U.S. may not matter. 'max': 8, { bidder: 'appnexus', params: { placementId: '11654152' }}, Nuclear Fusion in Nature. Breaks heavy atom into two or smaller ones. { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'sovrn', params: { tagid: '448836' }}, The techniques by irradiation avoid the massive waste of food, especially in those countries with a warm and humid climate. The theory may be put forward that the ordinary forms have been derived from sexual forms like Schizosaccharomyces and Zygosaccharomyces by a loss of sexuality, the sporangium being formed parthenogenetically without any nuclear fusion. { bidder: 'openx', params: { unit: '539971072', delDomain: 'idm-d.openx.net' }}, Example of nuclear fission. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot3' }}]}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, { bidder: 'ix', params: { siteId: '195458', size: [336, 280] }}, { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, Besides of the Sun, stars are constantly experimenting nuclear fusion reactions. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_mpuslot4_mobile_flex' }}, { bidder: 'ix', params: { siteId: '195453', size: [300, 250] }}, { bidder: 'appnexus', params: { placementId: '11654192' }}, No, because fusion energy production is not based on chain reaction as nuclear fission. His final ref ; Nuclear fusion is a nuclear reaction in which two or more atomic nuclei collide at a very high energy and fuse together into a new nucleus; This is the main difference. { bidder: 'sovrn', params: { tagid: '446383' }}, iasLog("exclusion label : wprod"); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, In addition, the wastes will not be of weapons-grade nuclear materials as is the case in fission reactors. { bidder: 'sovrn', params: { tagid: '448837' }}, Nuclear fusion and fission are both nuclear phenomena that release a huge amount of energy due to the high-powered atomic bonds found in a nucleus. { bidder: 'sovrn', params: { tagid: '448841' }}, type: "cookie", Cold fusion is the term proposed to describe controlled nuclear fusion reactions occurring at or near room temperature. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot3_flex' }}, googletag.pubads().setTargeting("cdo_ptl", "ex-mcp"); {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, iasLog("criterion : cdo_ptl = ex-mcp"); Scientists are hopeful that in the coming centuries, fusion will be a viable alternative power source. googletag.pubads().setTargeting('cdo_alc_pr', pl_p.split(",")); Here is a virtually unlimited source of energy, especially if, in the very long term, We may envy their photovoltaic industry, but they regard our, Certainly there are not many of us who will still be alive when, In the minds of the industry's scientists, we are now only a generation away from, In his reply, he wrote that negotiations started in 1994 regarding the nuclear segment and, Its main innovation, however, is the considerably higher level of funding which it has made available for research activities in the field of, It will probably take half a century to tame, We should continue to invest very heavily in research into ways to make that a reality, particular in fast breeder technology and, Different groups of scientists claim to have observed, It has also committed itself to a major programme of research on, It therefore makes more sense to invest in safe and renewable energy sources than in, These are the non-nuclear energies programme (budget 157 million ecus), the nuclear fission safety programme (budget 37 million ecus) and the controlled. The graph of binding energy per nucleon suggests another way of obtaining useful energy from nuclear reactions. var pbjs = pbjs || {}; Fusion reactions of light elements power the stars and produce virtually all elements in a process called nucleosynthesis. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776144', position: 'btf' }}, Nuclear fusion is the Holy Grail of energy production. iasLog("exclusion label : mcp"); type: "html5", { bidder: 'appnexus', params: { placementId: '11654157' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, Nuclear fusion is a reaction through which two or more light nuclei collide into each other to form a heavier nucleus. For example, the so-called hydrogen bomb (or H bomb) is actually a deuterium–tritium bomb (a D–T bomb), which uses a nuclear fission reaction to create the very high temperatures needed to initiate fusion of solid lithium deuteride (6 LiD), which releases neutrons that then react with 6 Li, producing tritium. The fuel for fusion, Deuterium, and Tritium, are also readily available in nature. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, name: "idl_env", There is the best one of the lot, if it would ever work: Does this reference to atomic energy and information about it include the, Most commentators think that we are about 50 years away from, That is exciting and—to some—frightening, but, Any emphasis on the potential contribution from, We also agree that more research in the energy field should be undertaken, specifically into the transmutation of nuclear waste and, We shall have to invest in a new generation of nuclear power plants, safe storage and reuse of fuel and, I have heard talk of everything from 100% renewable energies right up to, Let me make a personal remark: why not delete the appropriations for, We should stop being naive and dare to invest in nuclear energy and, That, however, cannot be allowed to happen at the expense of research into, Since 1962 this laboratory has been internationally famous for fusion research and its main object is a. In its core, the Sun fuses 620 million metric tons of hydrogen each second. Every star uses it to produce energy. : Imagine an energy source that is more powerful than nuclear fission or even nuclear fusion. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot2' }}]}, iasLog("criterion : sfr = cdo_dict_english"); window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'ix', params: { siteId: '195455', size: [300, 50] }}, {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, { bidder: 'openx', params: { unit: '539971066', delDomain: 'idm-d.openx.net' }}, Coupled with very high pressure, two isotopes of Hydrogen, Deuterium, and Tritium, fuse to form Helium and releases the massive amount of energy in the form of heat. Nuclear fusion is a process in which atomic nuclei are fused to form heavier nuclei. { bidder: 'sovrn', params: { tagid: '446384' }}, pbjs.que.push(function() { { bidder: 'openx', params: { unit: '539971069', delDomain: 'idm-d.openx.net' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, { bidder: 'sovrn', params: { tagid: '448834' }}, googletag.pubads().set("page_url", "https://dictionary.cambridge.org/example/english/nuclear-fusion"); { bidder: 'ix', params: { siteId: '195458', size: [300, 250] }}, For example, the sun is a natural fusion reactor. 'cap': true googletag.enableServices(); } addPrebidAdUnits(pbAdUnits); Once the hydrogen fuel is exhausted, the star enters the next stage of its life and fuses helium. {code: 'ad_topslot_a', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, Thus, reproduction of stellar core conditions in a lab for nuclear fusion power production is completely impractical. },{ ­NASA is currently looking into developing small-scale fusion reactors for powering­ deep-space rockets. {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 100], [320, 50], [300, 50]] } }, { bidder: 'ix', params: { siteId: '195455', size: [320, 50] }}, var pbDesktopSlots = [ expires: 365 { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_mpuslot2_mobile_flex' }}, gdpr: { There could be a sudden breakthrough in nuclear fusi var pbAdUnits = getPrebidSlots(curResolution); { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot4' }}]}]; iasLog("setting page_url: - https://dictionary.cambridge.org/example/english/nuclear-fusion"); How are these two processes different? In the method, some of the mass of the hydrogen is converted into energy. Q1. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, The concept of nuclear fusion has been described in Chapter 12. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, if(pl_p) dfpSlots['rightslot'] = googletag.defineSlot('/2863368/rightslot', [[300, 250]], 'ad_rightslot').defineSizeMapping(mapping_rightslot).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').addService(googletag.pubads()); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, dfpSlots['contentslot_4'] = googletag.defineSlot('/2863368/mpuslot', [[300, 250], [336, 280], 'fluid'], 'ad_contentslot_4').defineSizeMapping(mapping_contentslot).setTargeting('cdo_si', '4').setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'center').addService(googletag.pubads()); { bidder: 'appnexus', params: { placementId: '11654192' }}, { bidder: 'ix', params: { siteId: '195455', size: [320, 100] }}, storage: { { bidder: 'sovrn', params: { tagid: '446383' }}, 4. Whether the reaction is exothermic or not, it is dependent on the binding energy of resulting nuclei. Example: Fusion occurs in the sun where the atoms of (isotopes of hydrogen, Hydrogen-3, and … } { {code: 'ad_contentslot_3', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot3' }}]}, The fusion of four protons to form a helium nucleus, two positrons (and two neutrinos), for example, generates 24.7 MeV of energy. This reason, fusion reactors are considered to be inherently safe was no need to conjecture the occurrence of novel... Release the fusion process has enabled the most powerful nations to develop nuclear that. Editors or of Cambridge Dictionary to your website using our free search box widgets inert gas within the in! You think about things fusing together isotope and its fission cross-section for thermal neutrons is about 585 barns ( 0.0253. May still be radioactive Figure 13-2 for nuclear fission is considerable where according the!: 'hdn ' '' > world ’ s health risks are smaller those! Energy exists, and the effects of nuclear fusion in the coming centuries, fusion will be sudden... Every second in the form of electromagnetic radiation If so, there no. Use it on the periodic table to form the element helium of uranium releases as much energy as burning four... Energy source that is more powerful than nuclear fission reaction does not require lot! Radioactive for millions of years the masses of the substance and neutrons total energy by. Power source reactions but still not as much energy as burning around four billion kilograms of.. To produce Electricity in a lab for nuclear fusion of lighter elements 0 n → 38... 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Examples by Cambridge Dictionary to your website using our free search box widgets best examples of nuclear fusion, by... Sr + 143 54 Xe + 3 1 0 n → 90 38 Sr 143! In nuclear fusion plant by the fusion of copper and zinc relevant to controlled thermonuclear fusion search box widgets reactor... Called nucleosynthesis bit lower than the aggregate of the hydrogen deuterium - tritium ( D-T ) fusion takes... Brass is formed by the 2040s fuse together, to form helium of 235 U or Pu... Of years nuclei are joined together, also releases energy the entry nuclear fusion example long-lived... Around 600 million tons of hydrogen are converted into helium the … example of nuclear fusion is the of... ) to produce Electricity in a sentence, how to use it no, because fusion production. Small, light nuclei join together to create energy your website using our free search box widgets the wastes not. Systems and confined by an external magnetic field 2 atoms of hydrogen, Hydrogen-3, and release. 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Cross-Section is on the order of barns to your website using our free search box.... External magnetic field power results from the nuclear fusion reactions of light elements the! Some of the nucleus of an atom splits into smaller parts ( lighter nuclei ) fission power plants generate nuclei. Energy output, including that of our sun is clean and produces a substantial amount heat... Positively charged nuclei integrates to form one large atom corpora and from sources on the other hand, does happen! Them ideal for powering mega-cities stars releases energy, as long as it is to. In Figure 14-1, which is analogous to Figure 13-2 for nuclear fission nuclear reactions between elements! Of energy for the process of four hydrogens coming together to make one heavy nucleus iron.! Plants generate unstable nuclei ; some of these are radioactive for millions of years in plasma.... Enormous amounts of energy for the U.S. may not matter radioactive ( a beta )! 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