Scintillation detectorsyog siv rau kev txiav txim siab ntawm lub zog siab ntawm X-ray spectrum.Nyob rau hauv scintillation detectors cov khoom ntawm lub detector zoo siab rau luminescence (emission ntawm pom los yog ze-pom pom lub teeb photons) los ntawm absorbed photons los yog hais.Tus naj npawb ntawm photons tsim yog proportional rau lub zog ntawm absorbed thawj photon.Lub teeb pulses yog sau los ntawm photo-cathode.Electrons, emitted los ntawm lubphotocathode, yog nrawm los ntawm kev siv high voltage thiab amplified ntawm lub dynodes ntawm txuas photomultiplier.Nyob rau hauv lub detector tso zis hluav taws xob mem tes proportional rau lub absorbed zog yog tsim.Qhov nruab nrab lub zog tsim nyog los tsim ib qho hluav taws xob ntawm photocathode yog kwv yees li 300 eV.RauX-ray detectors, feem ntau NaI lossis CsI crystals qhib nrogthaliumsiv.Cov khoom siv lead ua no muab cov pob tshab zoo, ua haujlwm siab photon thiab tuaj yeem ua rau ntau qhov loj.
Scintillation detectors tuaj yeem ntes ntau yam ntawm cov hluav taws xob ionizing, suav nrog alpha hais, beta hais, gamma rays thiab X-rays.Lub tshuab scintillator yog tsim los hloov lub zog ntawm qhov xwm txheej hluav taws xob mus rau qhov pom lossis ultraviolet lub teeb, uas tuaj yeem kuaj pom thiab ntsuas los ntawm ib qhosiv photodetector.Cov ntaub ntawv sib txawv scintillator yog siv rau ntau hom hluav taws xob.Piv txwv li, organic scintillator feem ntau yog siv los kuaj alpha thiab beta hais, thaum inorganic scintillator feem ntau siv los kuaj gamma rays thiab X-rays.
Qhov kev xaiv ntawm scintillator nyob ntawm cov yam ntxwv xws li lub zog ntau ntawm cov hluav taws xob kom kuaj tau thiab cov kev cai tshwj xeeb ntawm daim ntawv thov.
Post lub sij hawm: Oct-26-2023