Cov txheej txheem:
Video: Dab tsi yog qhov sib txawv tseem ceeb ntawm tshuaj lom neeg thiab cov tshuaj tiv thaiv nuclear Lub hlwb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
(1) Nuclear tshuaj tiv thaiv koom nrog kev hloov inan atom lub nucleus, feem ntau ua ib txawv lub caij, nrog rau cov emission ntawm hluav taws xob xws li α, βandγ thiab lwm yam rays. Tshuaj tiv thaiv , ntawm qhov tod tes, koom nrog tsuas yog ib qho kev hloov ntawm cov hluav taws xob thiab tsis muaj kev hloov pauv hauv nuclei.
Kuj nug, dab tsi tuaj yeem tsim los ntawm cov tshuaj tiv thaiv tshuaj?
Hauv ib tshuaj tiv thaiv , cov atoms thiab moleculesproduced los ntawm cov tshuaj tiv thaiv yog hu ua cov khoom. Tsis muaj atomsare tshiab tsim, thiab tsis muaj atoms raug puas tsuaj. Hauv ib tshuaj tsis haum tshuaj , reactants sib cuag, bonds ntawm atoms nyob rau hauv lub reactants puas lawm, thiab atoms rearrange thiab daim ntawv newbonds los ua cov khoom.
Ib sab saum toj no, yuav ua li cas tshwm sim thaum lub caij muaj hluav taws xob tawg? Tom qab radioactive lwj , cov keeb hloov mus rau qhov sib txawv isotope ntawm tib yam keeb los yog inan tag nrho txawv keeb . Cov hluav taws xob cuam tshuam li cas nuclear ntawm ib qho isotope tsis ruaj khov? Txhua lub sij hawm uas ib tug unstablenucleus emits alpha los yog bets hais, tus naj npawb ntawm protons thiab neutrons hloov.
Yog li, dab tsi yog qee qhov kev siv ntawm fission tshua?
Qee qhov kev siv ntawm fission cov tshuaj tiv thaiv yog:
- Nws yog siv nyob rau hauv kev tsim hluav taws xob nyob rau hauv ib tug nuclear fais fab nroj tsuag.
- Nws yog siv los ua ib lub foob pob nuclear.
- Nws yog siv los tsim radioisotopes rau kev kho mob lub hom phiaj. Nws tseem siv los tsim cov neutrons.
- Neutrons yog siv rau kev lag luam.
Hauv hom xov tooj cua twg yog ob lub protons thiab ob lub neutrons tawm ntawm lub nucleus?
Alpha lwj : A nucleus tshem tawm ob protons thiab ob neutrons khi ua ke, hu ua alphaparticle. Beta lwj : A neutron ua a proton , electron thiab antineutrino. Lub ejectedelectron yog beta particle. Kev tsis sib haum xeeb: A nucleus splits rau hauv ob daim.
Pom zoo:
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