High energy resolution scintillation spectrometers
High energy resolution scintillation spectrometers
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DOI：
10.1109/tns.2004.832616
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发表时间：
2003-10
期刊：
影响因子：
--
通讯作者：
K. Shah;J. Glodo;M. Klugerman;W. Higgins;T. Gupta;P. Wong
中科院分区：
文献类型：
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作者：
K. Shah;J. Glodo;M. Klugerman;W. Higgins;T. Gupta;P. Wong
报道了用于伽马能谱的Ce掺杂闪烁体LaBr/Sub3/：Ce。这种闪烁体的晶体是用布里奇曼法生长的。当掺入Ce时，这种材料具有高的光输出(>；60,000光子/MeV)和快速的主衰减常数(<；30 ns)。LaBr/Sub3/：Ce发光的峰值位于360 nm。LaBr/SUB 3/：Ce对伽马射线探测显示出极高的能量分辨率。对于662 keV的伽马射线(/sup 137/Cs源)，与光电倍增管耦合的Labr/sub3/：Ce晶体在室温下的能量分辨率为2.7%(半高宽)。这种能量分辨率比NaI(TI)闪烁体的能量分辨率高两倍以上。对LaBr/Sub3/：Ce闪烁体的能量分辨率进行了分析，并讨论了该闪烁体在其他伽马射线能量下的性能。讨论了LaBr/SUB3/：Ce晶体与硅雪崩光电二极管耦合的能量分辨率。讨论了该材料的潜在应用。
We report on cerium doped scintillator - LaBr/sub 3/:Ce for gamma ray spectroscopy. Crystals of this scintillator have been grown using the Bridgman process. This material when doped with cerium has high light output (>60,000 photons/MeV) and fast principal decay constant (<30 ns). The peak of LaBr/sub 3/:Ce emission is at 360 nm. LaBr/sub 3/:Ce shows excellent energy resolution for gamma ray detection. For 662 keV gamma rays (/sup 137/Cs source), energy resolution of 2.7% (FWHM) has been recorded at room temperature for LaBr/sub 3/:Ce crystals coupled to a photomultiplier. This energy resolution is over two times better than that of NaI(TI) scintillators. Analysis of the energy resolution of LaBr/sub 3/:Ce scintillators is presented and the performance of this scintillator at other gamma ray energies is covered. Energy resolution of LaBr/sub 3/:Ce crystals coupled to silicon avalanche photodiodes is discussed. Potential applications of this material are addressed.