Video: Yuav ua li cas thaum lub photon tsoo lub atom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Photon hits cov electron thiab muab qee qhov ntawm nws lub zog thiab mus rau qee qhov sib txawv nrog cov wavelength loj dua. Electron yuav tau txais lub zog kinetic thiab txav mus rau lwm qhov kev taw qhia. Yog lub zog ntawm photon yog loj txaus kom tshem tawm cov electron ntawm atom , nws yuav ua li ntawd.
Ua raws li qhov xav tau, yuav ua li cas thaum lub photon cuam tshuam nrog lub atom?
Kev sib cuam tshuam ntawm photon thiab atom ua rau lub tshuab hluav taws xob hloov ntawm lub orbits siab dua mus rau qis orbit los yog los ntawm qis orbits mus rau siab dua orbits. Muaj kev hloov ntawm electrons nyob rau hauv nws orbits.
Tsis tas li ntawd, yuav ua li cas thaum lub photon nres? Nws muaj lub zog los ntawm kev tsim txiaj ntawm nws tsab ntawv tsa suab thiab yoj zog thiab muaj zog ua haujlwm ntawm nws cov zaus. Yog li no a photon ua tsis tau nres tshwj tsis yog thaum absorbed los ntawm teeb meem los yog annihilated (raws li nyob rau hauv khub ntau lawm). Yog nws yog nres nws tuag.
Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas tshwm sim thaum lub teeb hits atom?
Ntawm ib atomic theem, thaum photons tshwm sim ntawm qhov nruab nrab tshiab, lawv tau nqus los ntawm cov atoms /electrons thiab tom qab ntawd rov tso tawm lossis hloov mus rau lub zog sab hauv. Cov re-emission photons tuaj yeem nyob ntawm tib zaus / wavelength li thaum lawv tau nqus los yog ntawm qhov sib txawv / wavelength.
Vim li cas photons cuam tshuam nrog teeb meem?
X-ray photons yog tsim los ntawm cov kev sib tham ntawm lub zog electrons nrog teeb meem nyob rau theem atomic. Photons (x-ray thiab gamma) xaus lawv lub neej los ntawm kev hloov lawv lub zog mus rau electrons muaj nyob rau hauv teeb meem.
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