用于全身计数的大型塑料闪烁体的蒙特卡罗计算和测量的总效率及能量分辨率之间的比较。
A comparison between Monte Carlo-calculated and -measured total efficiencies and energy resolution for large plastic scintillators used in whole-body counting.
作者信息
Nilsson J, Isaksson M
机构信息
Department of Radiation Physics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, SU/Sahlgrenska, 413 45 Gothenburg, Sweden.
出版信息
Radiat Prot Dosimetry. 2011 Mar;144(1-4):555-9. doi: 10.1093/rpd/ncq340. Epub 2010 Nov 2.
The measured total efficiency for several source positions has been determined for a large, plastic scintillation detector (NE 102A, 91.5 × 76.0 × 24.5 cm(3)) used for whole-body counting gamma spectrometry. The results have been compared with Monte Carlo-calculated total efficiencies; the code used was MCNPX 2.60. For (137)Cs, there was a good agreement between the measured and calculated total efficiencies. MXNPX was also used to calculate the electron light yield for (137)Cs; for the detector material NE 102A, Birks' constant kB was found to be 9.6 mg cm(-2) MeV(-1). The effect of light losses on spectrum resolution has been investigated for (65)Zn.
已针对用于全身计数伽马能谱分析的大型塑料闪烁探测器（NE 102A，91.5×76.0×24.5 cm³）测定了几个源位置的测量总效率。已将结果与蒙特卡罗计算的总效率进行了比较；使用的代码是MCNPX 2.60。对于¹³⁷Cs，测量的总效率与计算的总效率之间有良好的一致性。MXNPX还用于计算¹³⁷Cs的电子光产额；对于探测器材料NE 102A，发现比尔克斯常数kB为9.6 mg cm⁻² MeV⁻¹。已针对⁶⁵Zn研究了光损失对能谱分辨率的影响。
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