Ce: YAG - Crystal Yofunika ya Scintillation

Ce: YAG ndi kristalo wofunikira wa scintillation wokhala ndi ntchito yabwino kwambiri ya scintillation. Iwo ali mkulu kuwala dzuwa ndi lonse kuwala kugunda. 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 scintillation yomwe imawola mwachangu yokhala ndi zinthu zambiri, yotulutsa kuwala kwambiri (20000 photons/MeV), kuwola mwachangu (~ 70ns), zinthu zabwino kwambiri za thermomechanical, komanso mawonekedwe owoneka bwino (540nm) Ndili bwino. zofananira ndi kulandira tcheru wavelength wa wamba photomultiplier chubu (PMT) ndi silikoni photodiode (PD), kuwala kugunda kwabwino kumasiyanitsa gamma cheza ndi alpha particles, Ce:YAG ndi oyenera kuzindikira alpha particles, ma elekitironi ndi beta cheza, ndi zina zotero. katundu wa tinthu particles, makamaka Ce: YAG single krustalo, n'zotheka kukonzekera mafilimu woonda ndi makulidwe osachepera 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.