以国产的掺铈氯化镧(LaCl3:Ce)闪烁晶体与线性电流大于1.5 A的光电倍增管构成闪烁探测器,利用 60Co、137Cs放射性标准源场,实验测量这种探测器对γ辐射的探测能力,并与同情况NaI:Tl闪烁探测器进行比对;利用266 nm单色激光和ns级的γ脉冲辐射分别对这种闪烁体的光致激发、辐射激发的时间响应性能进行测量.测量结果表明:国产新型LaCl3:Ce无机闪烁晶体样品构成的探测器对1.25 MeV 、0.66 MeV γ射线的探测能力平均约为同情况NaI:Tl闪烁探测器的103%,高的已超过了同尺寸NaI:Tl构成的闪烁探测器;266 nm单色激光光致激发时间响应波形前沿、半高宽、后沿和衰减常数分别为1.05 ns、17.42 ns、54.30 ns和24.61 ns,ns级的γ脉冲辐射激发的时间响应波形前沿、半高宽、后沿和衰减常数分别为1.52 ns、21.99 ns、75.13 ns和34.19 ns.
参考文献
| [1] | Andriessen J;Antonyak O T;Dorenbos P et al.Experimental and Theoretical Study of Spectroscopic Properties of Ce3+ doped LaCl3 Single Cristals[J].Optics Communications,2000,178:355-363. |
| [2] | Guillot-Noel O;de Haas J T M;Dorenbose P et al.Optical and Scintillation Properties of Cerium-doped LaCl3,LuBr3 and LuCl3[J].Journal of Luminescence,1999,85:21-23. |
| [3] | Higgins W M;Glodo J;Von Loef E et al.Bridgman Growth of LaBr3 and LaCl3 Crastal High-resolution Gamma-ray Spectrometers[J].Journal of Crystal Growth,2006,287:239-242. |
| [4] | Balcerzvk M;Moszynski M;Kapusta M et al.Comparison of LaCl3:Ce and NaI (TI) Scintillators in γ-ray Spectrometry[J].Nuclear Instruments and Methods in Physics Research,2005,A537:50-56. |
| [5] | Masahiro Tsutsumi;Yoshihiko Tanimura .LaCl_3(Ce) scintillation detector applications for environmental gamma-ray measurements of low to high dose rates[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2006(2):554-560. |
| [6] | W.M. Higgins;J. Glodo;E. Van Loef;M. Klugerman;T. Gupta;L. Cirignano;P. Wong;K.S. Shah .Bridgman growth of LaBr_3:Ce and LaCl_3:Ce crystals for high-resolution gamma-ray spectrometers[J].Journal of Crystal Growth,2006(2):239-242. |
| [7] | Van Loef E V D;Dorenbos P;Hollander R W et al.Scintillation Properties of LaCl3:Ce3+ Crystals:Fast,Efficient,and High-energy-resolution Scintillator[J].IEEE Transactions on Nuclear Science,2001,48(03):341-345. |
| [8] | K.S. Shah;J. Glodo;M. Klugerman;L. Cirignano;W.W. Moses;S.E. Derenzo;M.J. Weber .LaCl_3:Ce scintillator for γ-ray detection[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2003(1/2):76-81. |
| [9] | Marcin Balcerzyk;Marek Moszyhski;Maciej Kapusta .Comparison of LaCl_3:Ce and NaI(Tl) scintillators in γ-ray spectrometry[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2005(1/2):50-56. |
| [10] | Allier CP.;van Loef EVD.;Dorenbos P.;Hollander RW.;van Eijk CWE. Kramer KW.;Gudel HU. .Readout of a LaCl3(Ce3+) scintillation crystal with a large area avalanche photodiode[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2002(3):547-550. |
| [11] | 刘庆兆.脉冲辐射场诊断技术[M].北京:科学出版社,1994:109-125. |
| [12] | 格伦 F 诺尔.辐射探测与测量[M].北京:原子能出版社,1988:59-61. |
| [13] | 胡孟春,李忠宝,唐章奎,彭太平,王振通,张建华,唐正元,杨洪琼,杨高照.CeF3闪烁探测器对五种能量中子的甄别能力研究[J].人工晶体学报,2005(03):514-518. |
| [14] | 胡孟春,李忠宝,唐章奎,周殿忠,杨洪琼,王振通,张建华,胡青元,杨高照.脉冲DT中子场中的CeF3、ST401 闪烁探测器输出比对[J].人工晶体学报,2005(02):380-383. |
| [15] | 胡孟春,李忠宝,周刚,张建华,赵广军,彭太平,王振通,唐章奎,杨高照,李如荣,唐登攀,陈钰钰.国产YAP：Ce闪烁晶体的相对探测能力测量[J].人工晶体学报,2008(06):1458-1461. |
| [16] | 胡孟春,叶文英,唐章奎,李忠宝.闪烁体衰减常数值的脉冲波形测量方法[J].仪器仪表学报,2004(z1):144-146. |
| [17] | 胡孟春,叶文英,周殿忠,郭存.新型无机闪烁体CeF3的时间特性研究[J].核电子学与探测技术,2003(05):411-413,410. |
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