Compton Effect vs Photoelectric effect
Compton Effect thiab Photoelectric Effect yog ob qho tseem ceeb heev uas tau tham hauv qab nthwv dej particle duality ntawm teeb meem. Cov lus piav qhia ntawm Compton Effect thiab cov nyhuv photoelectric coj mus rau kev tsim thiab kev pom zoo ntawm yoj particle duality ntawm teeb meem. Ob qhov teebmeem no ua lub luag haujlwm tseem ceeb hauv thaj chaw xws li quantum mechanics, atomic structure, lattice structure thiab txawm tias nuclear physics. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv cov haujlwm no txhawm rau ua tau zoo hauv cov kev tshawb fawb no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi photoelectric effect thiab Compton Effect yog, lawv cov ntsiab lus, qhov sib xws thiab thaum kawg qhov sib txawv ntawm Compton Effect thiab photoelectric effect.
Photoelectric Effect yog dab tsi?
Photoelectric effect yog cov txheej txheem ntawm ejection ntawm ib qho hluav taws xob los ntawm cov hlau nyob rau hauv rooj plaub ntawm qhov teeb meem electromagnetic tawg. Cov nyhuv photoelectric yog thawj zaug tau piav qhia los ntawm Albert Einstein. Lub yoj txoj kev xav ntawm lub teeb tsis tau piav qhia txog feem ntau ntawm cov kev soj ntsuam ntawm cov nyhuv photoelectric. Muaj qhov pib zaus rau qhov xwm txheej nthwv dej. Qhov no qhia tau hais tias txawm tias qhov kub npaum li cas ntawm electromagnetic tsis yog electrons yuav tsis raug tshem tawm tshwj tsis yog nws muaj qhov yuav tsum tau ua. Lub sij hawm ncua ntawm qhov tshwm sim ntawm lub teeb thiab ejection ntawm electrons yog hais txog ib txhiab ntawm tus nqi xam los ntawm yoj txoj kev xav. Thaum lub teeb tshaj qhov pib zaus raug tsim, tus naj npawb ntawm emitted electrons nyob ntawm qhov siv ntawm lub teeb. Qhov siab tshaj plaws kinetic zog ntawm ejected electrons nyob ntawm qhov zaus ntawm qhov teeb meem teeb. Qhov no coj mus rau qhov xaus ntawm photon txoj kev xav ntawm lub teeb. Qhov no txhais tau hais tias lub teeb coj li cov khoom thaum cuam tshuam nrog cov teeb meem. Lub teeb los ua cov pob ntawv me me ntawm lub zog hu ua photons. Lub zog ntawm photon tsuas yog nyob ntawm qhov zaus ntawm photon. Muaj ob peb lwm cov ntsiab lus txhais nyob rau hauv cov nyhuv photoelectric. Kev ua haujlwm ntawm cov hlau yog lub zog sib haum rau qhov pib zaus. Qhov no tuaj yeem tau txais los ntawm cov qauv E=h f, qhov twg E yog lub zog ntawm photon, h yog Plank tas li, thiab f yog qhov zaus ntawm nthwv dej. Txhua qhov system tuaj yeem nqus lossis tawm tsuas yog qee qhov tshwj xeeb ntawm lub zog. Cov kev soj ntsuam pom tau hais tias cov electron yuav nqus cov photon tsuas yog tias lub zog ntawm photon txaus coj cov electron mus rau lub xeev ruaj khov.
Compton Effect yog dab tsi?
Compton Effect lossis Compton scattering yog txheej txheem ntawm kev tawg ntawm cov hluav taws xob hluav taws xob los ntawm cov hluav taws xob dawb. Kev suav ntawm Compton Scattering qhia tau hais tias cov kev soj ntsuam tsuas tuaj yeem piav qhia siv lub photon txoj kev xav ntawm lub teeb. Qhov tseem ceeb tshaj plaws ntawm cov kev soj ntsuam no yog qhov hloov pauv ntawm lub wavelength ntawm cov photon tawg nrog lub kaum sab xis ntawm kev tawg. Qhov no tsuas yog piav qhia txog kev kho cov electromagnetic yoj raws li ib feem. Qhov sib npaug tseem ceeb ntawm Compton tawg yog Δλ=λc(1-Cosθ), qhov twg Δλ yog qhov hloov pauv wavelength, λc yog Compton wavelength, thiab θ yog lub kaum sab xis ntawm kev sib txawv. Qhov siab tshaj plaws ua haujlwm wavelength tshwm sim ntawm 180 0
Qhov txawv ntawm Photoelectric Effect thiab Compton Effect yog dab tsi?
• Cov nyhuv photoelectric tsuas yog tshwm sim hauv cov khoom siv hluav taws xob, tab sis Compton tawg tuaj yeem tshwm sim hauv ob qho tib si khi thiab dawb electrons; Txawm li cas los xij, nws tsuas yog pom tau hauv cov hluav taws xob dawb xwb.
• Hauv cov nyhuv photoelectric, qhov xwm txheej photon tau pom los ntawm electron, tab sis nyob rau hauv Compton tawg, tsuas yog ib feem ntawm lub zog yog absorbed, thiab tus so ntawm photon yog tawg.
