Characteristics of the new YAlO/sub 3/:Ce compared with BGO and GSO
Characteristics of the new YAlO/sub 3/:Ce compared with BGO and GSO
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新型YAlO/sub 3/:Ce与BGO和GSO相比的特性
DOI：
10.1109/23.212340
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
I. Sinitzin
中科院分区：
文献类型：
--
作者：
S. Ziegler;J. Rogers;V. Selivanov;I. Sinitzin
研究了YAlO/sub 3/：Ce（YALO）作为高密度（5.35gm/cm/sup 3/）、高光产额的快速闪烁探测器的特性，并与其它闪烁材料进行了比较。闪烁光的衰减可以用两个指数的和来描述，衰减常数分别为31 ns和246 ns，分别占总光产额的98%和2%。通过比较相同条件下BGO中YAlO产生的光电子数，测得光产额为19700个光子/MeV。对于4.0*8.0*25.0 mm/sup 3/样品，在511 keV的伽马射线能量下的能量分辨率为6.7%。使用两个YAlO晶体检测湮灭量子（具有200 keV阈值）的定时测量的半高宽为1.1ns。Monte Carlo模拟结果表明，在YAlO中，吸收90%的511 keV γ量子的晶体深度为51.8 mm（BGO中为25.2 mm）。>
The characteristics of YAlO/sub 3/:Ce (YALO) used as a fast scintillation detector with high density (5.35 gm/cm/sup 3/) and high light yield were investigated and compared with those of other scintillation materials. The decay of the scintillation light could be described by the sum of two exponentials with decay constants of 31 ns and 246 ns and contributing 98% and 2% to the total light yield, respectively. The light yield of 19700 photons/MeV was measured by comparing the number of photoelectrons produced in YAlO in BGO under the same conditions. The energy resolution at a gamma ray energy of 511 keV was 6.7% for a 4.0*8.0*25.0 mm/sup 3/ sample. The FWHM of a timing measurement using two YAlO crystals detecting annihilation quanta (with 200 keV threshold) was 1.1 ns. Monte Carlo simulations showed that the crystal depth for the absorption of 90% of 511 keV gamma quanta is 51.8 mm in YAlO (compared with 25.2 mm in BGO). >