Kev ua tau zoo ntawm cov cuab yeej pom kev hmo ntuj hauv kev nthuav dav
Raws li cov electrons hla lub raj, cov atoms nyob rau hauv lub raj tso tawm cov electrons zoo ib yam li tus lej uas yog qhov tseem ceeb ntawm tus naj npawb ntawm cov khoom siv hluav taws xob sib npaug los ntawm ib qho ntawm ib qho (txog li ob peb txhiab zaus), thiab qhov no tau ua tiav siv daim phiaj microchannel ( MCPs) nyob rau hauv lub raj. MCP yog lub iav me me uas muaj ntau lab ntawm cov microscopic pores (microchannels) ua los ntawm fiber ntau optic technology. Lub phaj microchannel yog nyob rau hauv lub tshuab nqus tsev nrog hlau electrodes mounted ntawm ob sab ntawm lub disk. Txhua microchannel yog kwv yees li 45 npaug ntev npaum li nws dav thiab ua haujlwm zoo li lub tshuab hluav taws xob.
Thaum electrons los ntawm photocathode ntaus thawj electrode ntawm lub microchannel phaj, cov electrons yog ceev los ntawm iav microchannels nyob rau hauv ib tug high voltage ntawm 5000 volts ntawm ob lub electrodes. Kev hla ntawm electrons los ntawm microchannel ua rau ntau txhiab tus electrons raug tso tawm los ntawm cov channel, ib txheej txheem hu ua cascade Secondary emission. Nyob rau hauv luv luv, tus thawj electrons ntaus sab ntawm microchannel, thiab tom qab ntawd cov atoms zoo siab tso tawm ntau electrons. Cov hluav taws xob tshiab no tseem ntaus lwm cov atoms, tsim kom muaj cov tshuaj tiv thaiv kab mob uas ua rau muaj ib txhais tes ntawm cov hluav taws xob nkag mus rau microchannel thiab ntau txhiab tawm hauv nws. Ib qho tshwm sim nthuav yog tias cov microchannels ntawm MCP muaj lub kaum sab xis me me (txog 5-8 degree), ob qho tib si tuaj yeem ua rau muaj kev sib tsoo hluav taws xob thiab txo cov ionic thiab ncaj qha kev tawm tswv yim los ntawm phosphorescent plasma txheej ntawm cov zis.
Hmo pom kev pom daim duab qhia chaw yog qhov tseem ceeb rau lawv cov eerie ntsuab sheen.
Thaum kawg ntawm daim duab intensifier raj, electrons ntaus ib qho screen nrog phosphor txheej. Cov electrons no tuav lawv txoj hauj lwm txheeb ze thaum lawv dhau los ntawm microchannels, uas ua kom cov duab nyob twj ywm tsis zoo vim tias cov hluav taws xob ua kom zoo ib yam li cov photons tau pib ua raws. Lub zog nqa los ntawm cov electrons no ua rau cov khoom siv phosphorescent mus txog lub xeev zoo siab thiab tso tawm photons. Cov phosphor no tsim cov duab ntsuab ntawm qhov screen, uas tau dhau los ua cov khoom siv thaum hmo ntuj. Cov duab phosphorescent ntsuab tuaj yeem pom los ntawm lwm lub lens hu ua eyepiece, uas tuaj yeem siv los nthuav cov duab lossis kho qhov tsom.NVD tuaj yeem txuas nrog cov khoom siv hluav taws xob, xws li saib, lossis cov duab tuaj yeem saib ncaj qha. dhau ntawm qhov muag.
