Kev siv kho qhov muag muaj roj hluav taws xob feem ntau siv cov roj kho kho qhov muag zoo li lub teeb liab txuas, uas yuav yog photometric txuas rau lub specetric txuas rau lub spectrometer rau kev txheeb xyuas qhov tseeb. Vim yog qhov yooj yim ntawm cov tshuaj fiber ntau, cov neeg siv tau hloov tau yooj yim heev los tsim cov txheej txheem nrhiav pom tseeb.
Qhov kom zoo dua ntawm fiber ntau spectrometers yog qhov teeb meem thiab yooj ntawm ntsuas ntsuas. Lub microOptical Fiber Ntau TshajLos ntawm mut nyob rau hauv lub teb chaws Yelemees tau nrawm heev uas nws tuaj yeem siv rau kev tsom xam online. Thiab vim tias kev siv cov nqi qis dua universal yog txo qis, thiab yog li tus nqi ntawm tag nrho cov kev ntsuas yog txo
Qhov yooj yim configuration ntawm cov fiber ntau qhov hluav taws xob muaj txiaj ntsig muaj kev sib tsoo, ib qho kev sib tw, thiab cov ntes. Cov tsis muaj ntawm cov feem no yuav tsum tau teev tseg thaum yuav ib lub tshuab hluav taws xob. Cov kev ua tau zoo ntawm Spectrometer yog nyob ntawm cov kev sib xyaw ua ke thiab kev ntsuas hluav taws xob, tom qab ntsuas hluav taws xob, tom qab muaj cov ntsiab lus kho tau, cov khoom siv tsis muaj peev xwm tsis muaj kev hloov pauv.
Ua hauj lwm
sib tsoo
Kev xaiv ntawm grating yog nyob ntawm cov kev yuav tsum muaj ntau thiab daws teeb meem. Rau fiber ntau optic spectrometers, ntau yam spectral ntau yog feem ntau ntawm 200nm thiab 2500nm. Vim qhov yuav tsum tau ua ntawm cov kev daws teeb meem siab, nws yog qhov nyuaj kom tau txais ntau qhov chaw dav dav; Nyob rau tib lub sijhawm, qhov siab dua cov kev txiav txim siab daws teeb meem, qhov tsis muaj lumuminous flux. Rau cov tseev kom muaj ntawm kev daws teeb meem qis dua thiab dav dav spectral ntau, 300 kab / hli grating yog qhov kev xaiv ib txwm muaj. Yog tias qhov kev daws teeb meem siab tshaj plaws yog qhov yuav tsum tau ua, nws tuaj yeem ua tiav los ntawm kev xaiv ib grating nrog 3600 kab / hli, lossis xaiv ib qho kev ntsuas nrog ntau dua pixel daws teeb meem.
txoj kab txiav
Tus nqaim nqaim tuaj yeem txhim kho kev daws teeb meem, tab sis lub teeb flux yog me; Ntawm qhov tod tes, dav rau slits tuaj yeem nce rhiab siab, tab sis ntawm cov nuj nqis ntawm kev daws teeb meem. Hauv cov ntawv thov sib txawv, qhov dav dav dav dav yog xaiv los ua kom ua kom tiav cov kev xeem tag nrho.
kev sojntsuam
Cov ntes hauv qee txoj kev txiav txim siab daws teeb meem thiab rhiab heev Optic Spectromometer, nws tau muab faib ua cov kev ntsuas me me lossis muab faib ua cov pixels loj dua rau qhov siab dua. Feem ntau, qhov rhiab ntawm CCD Ntes yog qhov zoo dua, yog li koj tuaj yeem tau txais kev daws teeb meem zoo dua yam tsis muaj qhov rhiab rau qee yam. Vim hais tias ntawm cov siab siab thiab cov suab nrov ntawm cov suab nrov hauv Ingrared, lub teeb liab-rau-suab nrov piv ntawm cov kab ke tuaj yeem hloov kho ntawm tub yees.
Lub lim lim dej
Vim yog cov multistage txawv cov nyhuv ntawm lub spectrum nws tus kheej, kev cuam tshuam ntawm multiistage diffraction tuaj yeem raug txo los ntawm kev siv lub lim. Tsis zoo li cov spectrestrometers, fiber ntau optic spectrometers yog coated ntawm lub cav, thiab ntu no yuav tsum tau nruab rau hauv qhov chaw ntawm lub hoobkas. Nyob rau tib lub sijhawm, cov txheej tseem muaj txoj haujlwm tiv thaiv kev xav thiab txhim kho lub teeb liab-rau-suab nrov piv ntawm cov kab ke.
Cov kev ua tau zoo ntawm Spectrometer yog feem ntau txiav txim siab los ntawm lub spectral ntau, kho qhov muag thiab rhiab. Kev hloov pauv rau ib qho ntawm cov tsis muaj feem ntau yuav cuam tshuam rau kev ua tau zoo ntawm lwm yam.
Qhov kev sib tw tseem ceeb ntawm lub spectrometer tsis yog kom ua kom tiav txhua lub sijhawm ua haujlwm ntawm kev tsim khoom, tab sis kom cov kev xav tau ntawm cov ntawv xaiv thib peb hauv no. Lub tswv yim no ua rau cov neeg siv hluav taws xob kom txaus siab rau cov neeg siv khoom kom tau txais kev nqis peev kawg. Qhov loj me ntawm lub voos xwmfab yog nyob ntawm cov phiaj xwm kev ua kom tiav uas yuav cuam tshuam nrog kev nyuaj siab thiab tus nqi ntawm cov khoom lag luam spectrometer thiab tus nqi ntawm lub spectrometer cov khoom lag luam. Cov khoom siv Spectrometer cov khoom yuav tsum ua kom tau raws li cov kev ua haujlwm uas xav tau los ntawm cov neeg siv khoom.
Spectral ntau yam
SpectrometersNrog rau cov hluav taws xob me me feem ntau muab cov ntaub ntawv nthuav dav ntxaws, whereas loj spectral muaj cov dav dav muaj ntau yam. Yog li ntawd, qhov kev pom zoo ntawm lub spectrometer yog ib qho ntawm cov tsis tseem ceeb uas yuav tsum tau hais meej meej.
Qhov cuam tshuam uas cuam tshuam rau lub spectral ntau yog kev cog lus feem ntau yog kev sib haum xeeb thiab ntes, thiab cov kev sib haum thiab ntes tau xaiv raws li cov cai sib txawv.
kev hnov tau
Hais txog rhiab heev, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm rhiab ntawm photometry (lub teeb liab me tshaj plaws uas muajyam siv hluav taws xobtuaj yeem ntes tau) thiab rhiab hauv cov pob txha stoichiometry (qhov tsawg tshaj plaws hauv kev nqus tias lub spectrometer tuaj yeem ntsuas tau).
a. Photomertric rhiab
Rau cov ntawv thov uas yuav tsum muaj cov siab rhiab heev, xws li fluorescence thiab Raman, peb pom zoo Seconds CCD Detes, thiab yog tsom iav kub, thiab dav slits ( 100μm lossis dav). Cov qauv no tuaj yeem siv sijhawm nyob ntev (los ntawm 7 milliseconds rau 15 feeb) txhawm rau txhim kho cov teeb liab muaj zog, thiab tuaj yeem txo cov suab nrov thiab txhim kho cov muaj ntau.
b. Stoichiometric Temitivity
Txhawm rau txhawm rau kuaj tau ob qhov tseem ceeb ntawm kev nqus tus nqi nrog cov kev sib haum xeeb, tsis yog qhov rhiab tau, tab sis kuj yog lub teeb liab-rau-suab nrov sib piv. Lub ntes nrog lub teeb liab zoo tshaj plaws-rau-suab nrov piv yog cov thermoelectric tub yees 1024-pixel ob-seem-seem Qhov nruab nrab ntawm ntau cov duab spectral kuj tseem tuaj yeem txhim kho cov teeb liab-rau cov suab nrov sib piv, thiab nce cov suab nrov sib piv rau ntawm lub teeb liab square ceev, piv txwv li ntawm 100 zaus tuaj yeem Nce lub teeb liab-rau-suab nrov piv 10 zaug, mus txog 10,000: 1.
Teeb meem
Kev daws teeb meem kho qhov muag yog qhov tseem ceeb ntsuas ntsuas qhov kho qhov muag. Yog tias koj xav tau kev daws teeb meem zoo heev, peb xav kom koj xaiv ib grating nrog 1200 kab / hli lossis ntau dua, nrog rau qhov nqaim me me ccd ntes.
Lub Sijhawm Post: Jul-27-2023