Ce:YAG — Ib qho tseem ceeb Scintillation Crystal

Ce: YAG yog ib qho tseem ceeb scintillation siv lead ua nrog zoo heev scintillation kev ua tau zoo. Nws muaj luminous efficiency thiab dav optical mem tes. Qhov zoo tshaj plaws yog tias nws qhov nruab nrab ntawm qhov nruab nrab ntawm luminescence yog 550nm, uas tuaj yeem ua tau zoo nrog cov cuab yeej tshawb nrhiav xws li silicon photodiodes. Piv nrog rau CsI scintillation siv lead ua, Ce: YAG scintillation siv lead ua muaj lub sij hawm sai sai, thiab Ce: YAG scintillation siv lead ua tsis muaj deliquescence, kub tsis kam, thiab ruaj khov thermodynamic kev ua tau zoo. Nws yog tsuas yog siv nyob rau hauv lub teeb particle detection, alpha particle detection, gamma ray detection thiab lwm yam teb. Tsis tas li ntawd, nws kuj tuaj yeem siv rau hauv electron detection imaging (SEM), high-resolution microscopic imaging fluorescent screen thiab lwm yam. Vim yog qhov sib cais me me ntawm Ce ions hauv YAG matrix (txog 0.1), nws yog qhov nyuaj rau kev sib xyaw Ce ions rau hauv YAG muaju, thiab qhov nyuaj ntawm kev loj hlob siv lead ua nce siab nrog kev nce ntawm cov kab uas siv lead ua.
Ce: YAG ib leeg siv lead ua yog cov khoom siv hluav taws xob nrawm nrawm nrog cov khoom zoo tshaj plaws, nrog lub teeb pom kev zoo (20000 photons / MeV), ceev luminous decay (~ 70ns), zoo heev thermomechanical zog, thiab luminous ncov wavelength (540nm) Nws yog zoo. matched nrog qhov tau txais rhiab wavelength ntawm zoo tib yam photomultiplier raj (PMT) thiab silicon photodiode (PD), zoo lub teeb mem tes distinguishes gamma rays thiab alpha hais, Ce:YAG yog haum rau kuaj alpha hais, electrons thiab beta rays, thiab lwm yam. Cov khoom ntawm cov khoom them nqi, tshwj xeeb tshaj yog Ce:YAG ib leeg siv lead ua, ua kom nws tuaj yeem npaj cov yeeb yaj kiab nyias nrog lub thickness tsawg dua 30um. Ce: YAG scintillation detectors yog dav siv nyob rau hauv electron microscopy, beta thiab X-ray suav, electron thiab X-ray imaging cov ntxaij vab tshaus thiab lwm yam teb.