Ce:YAG — He Crystal Scintillation Nui

Ce: ʻO YAG kahi aniani scintillation koʻikoʻi me ka hana scintillation maikaʻi loa. Loaʻa iā ia ka maikaʻi luminous kiʻekiʻe a me ka pulse optical ākea. ʻO ka pōmaikaʻi nui loa, ʻo kāna nalu waena o ka luminescence he 550nm, hiki ke hoʻopili pono ʻia me nā mea ʻike e like me nā kiʻi kiʻi kiʻi. Ke hoʻohālikelike ʻia me CsI scintillation crystal, Ce:YAG scintillation crystal he manawa palaho wikiwiki, a ʻo Ce:YAG scintillation crystal ʻaʻohe deliquescence, ke kūpaʻa wela kiʻekiʻe, a me ka hana thermodynamic paʻa. Hoʻohana nui ʻia ia i ka ʻike ʻana i ka ʻāpana māmā, ka ʻike ʻāpana alpha, ka ʻike ray gamma a me nā māla ʻē aʻe. Eia kekahi, hiki ke hoʻohana ʻia i ka electron detection imaging (SEM), kiʻi kiʻi microscopic kiʻi fluorescent kiʻekiʻe a me nā māla ʻē aʻe. Ma muli o ka liʻiliʻi o ka hoʻokaʻawale ʻana o nā ion Ce i ka matrix YAG (e pili ana i 0.1), paʻakikī ke hoʻokomo i nā ion Ce i loko o nā kristal YAG, a piʻi nui ka paʻakikī o ka ulu ʻana o ke aniani me ka piʻi ʻana o ke anawaena kristal.
Ce: ʻO YAG hoʻokahi kristal he mea hoʻoheheʻe wikiwiki me nā waiwai piha maikaʻi loa, me ka puka kukui kiʻekiʻe (20000 photons / MeV), ka pohō māmā wikiwiki (~ 70ns), nā waiwai thermomechanical maikaʻi loa, a me ka lōʻihi o ka nalu peak (540nm) Ua maikaʻi. e like me ka loaʻa ʻana o ka nalu maʻalahi o ka pahu photomultiplier maʻamau (PMT) a me ke kiʻi kiʻi kiʻiona (PD), ʻike ʻia ka pulse māmā maikaʻi i nā kukuna gamma a me nā ʻāpana alpha, Ce: YAG kūpono no ka ʻike ʻana i nā ʻāpana alpha, nā electrons a me nā kukui beta, etc. nā waiwai o nā mea i hoʻopaʻa ʻia, ʻoi aku ka Ce:YAG hoʻokahi aniani, hiki ke hoʻomākaukau i nā kiʻi ʻoniʻoni me ka mānoanoa o lalo o 30um. Ce: YAG scintillation detectors ua hoʻohana nui ʻia i ka microscopy electron, beta a me ka helu X-ray, electron a me X-ray imaging pale a me nā kahua ʻē aʻe.