关于γ射线能谱分析中总峰比的不变性
On the invariability of the total-to-peak ratio in gamma-ray spectrometry.
作者信息
Vidmar Tim, Likar Andrej
机构信息
Jozef Stefan Institute, Jamova 39, P.O. Box 3000, SI-1001 Ljubljana, Slovenia.
出版信息
Appl Radiat Isot. 2004 Feb-Apr;60(2-4):191-5. doi: 10.1016/j.apradiso.2003.11.015.
It is demonstrated that the assumption on the independence of the total-to-peak ratio of the source position in gamma-ray spectrometry holds for coaxial detectors with sufficient accuracy to make it applicable to the determination of the full energy peak efficiencies in environmental measurements via the so-called efficiency transfer method. The calculations show that for planar detectors the assumption breaks down at higher gamma-ray energies and that for such detectors the use of the efficiency transfer method is only warranted for gamma-ray energies up to 200 keV.
结果表明，在伽马射线能谱分析中，源位置的总峰比独立性假设对于同轴探测器而言具有足够的准确性，从而可通过所谓的效率转移法将其应用于环境测量中全能峰效率的测定。计算结果表明，对于平面探测器，在较高伽马射线能量下该假设不成立，并且对于此类探测器，效率转移法仅适用于能量高达200 keV的伽马射线。
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