Nilsson J, Isaksson M
Department of Radiation Physics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, SU/Sahlgrenska, 413 45 Gothenburg, Sweden.
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。
