Ce: YAG - Crystal Yofunika Kwambiri ya Scintillation

Ce: YAG ndi kristalo wofunikira wa scintillation wokhala ndi ntchito yabwino kwambiri ya scintillation. Ili ndi kuwala kowala kwambiri komanso kugunda kwamphamvu kwamphamvu. Ubwino waukulu ndikuti kutalika kwake kwapakati kwa luminescence ndi 550nm, komwe kumatha kuphatikizidwa bwino ndi zida zodziwira monga silicon photodiodes. Poyerekeza ndi CsI scintillation crystal, Ce: YAG scintillation crystal ili ndi nthawi yowonongeka mofulumira, ndipo Ce: YAG scintillation crystal ilibe deliquescence, kukana kutentha kwambiri, ndi kukhazikika kwa thermodynamic performance. Amagwiritsidwa ntchito kwambiri pozindikira tinthu tating'ono, kuzindikira tinthu tating'ono ta alpha, kuzindikira kwa gamma ray ndi magawo ena. Kuphatikiza apo, itha kugwiritsidwanso ntchito pojambula zithunzi za ma elekitironi (SEM), mawonekedwe apamwamba kwambiri a microscopic imaging fluorescent screen ndi madera ena. Chifukwa cha magawo ang'onoang'ono olekanitsa a Ce ions mu matrix a YAG (pafupifupi 0.1), zimakhala zovuta kuphatikizira ma Ce ions mu makhiristo a YAG, ndipo zovuta za kukula kwa kristalo zimakula kwambiri ndikuwonjezeka kwa kristalo.
Ce: YAG single crystal ndi zinthu zomwe zimawola mwachangu komanso zowoneka bwino, zotulutsa kuwala kwambiri (20000 photons/MeV), kuwola mwachangu (~ 70ns), zida zabwino kwambiri za thermomechanical, komanso kuwala kowala kwambiri (540nm) Zimayenderana bwino ndi mawonekedwe owoneka bwino amtundu wamtundu wa silicon ndi machubu owoneka bwino amtundu wa silicon (PMT) kugunda kumasiyanitsa cheza cha gamma ndi tinthu tating'onoting'ono ta alpha, Ce: YAG ndiyoyenera kuzindikira tinthu tating'onoting'ono ta alpha, ma elekitironi ndi cheza cha beta, ndi zina zambiri. Zinthu zabwino zamakina a tinthu tating'onoting'ono, makamaka Ce: YAG crystal imodzi, zimapangitsa kuti zitheke kukonzekera mafilimu oonda ndi makulidwe osakwana 30um. Ce:YAG scintillation detectors amagwiritsidwa ntchito kwambiri mu ma electron microscopy, beta ndi X-ray count, electron ndi X-ray imaging screens ndi zina.