A Monte Carlo simulation approach for generating NaI detector response functions (DRFs) that accounts for non-linearity and variable flat continua
A Monte Carlo simulation approach for generating NaI detector response functions (DRFs) that accounts for non-linearity and variable flat continua
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DOI：
10.1016/s0168-583x(03)01539-8
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发表时间：
2004-01-01
影响因子：
1.3
通讯作者：
Sood, A
中科院分区：
文献类型：
--
作者：
Gardner, RP;Sood, A
一种新的方法来产生探测器响应函数（DRF）的碘化钠探测器的开发和演示。它包括使用蒙特卡罗模拟与特定目的的代码（名为g 03），利用相对严格的伽马射线传输非常简单的电子传输。该方法占两个现象，以前没有被以这种方式处理：碘化钠非线性和可变平坦连续部分的DRF。第一个是占利用已知的非线性关系碘化钠闪烁效率和沉积的电子能量内的Monte Carlo代码。第二种是使用占。电子射程和入射伽马射线能量之间的半经验关系在蒙特卡罗代码。3”x 3”和6”x 6”碘化钠探测器的DRF以Heath [AEC研发报告，物理学，TID-4500]中3”x 3”探测器的大量现有数据和6”x 6”探测器的新数据为基准。结果表明，该方法是准确的，使用这种方法应提高瞬发γ射线中子活化分析的准确性显着。(C)2003 Elsevier B. V.保留所有权利。
A new approach to generating detector response functions (DRFs) for NaI detectors is developed and demonstrated. It consists of using Monte Carlo simulation with a specific purpose code (named g03) that utilizes relatively rigorous gamma-ray transport with very simple electron transport. The approach accounts for two phenomena that have not been previously treated in this way: NaI non-linearity and the variable flat continua part of the DRF. The first is accounted for by utilizing the known non-linear relationship between NaI scintillation efficiency and deposited electron energy within the Monte Carlo code. The second is accounted for by using. a semi-empirical relationship between electron range and incident gamma-ray energy within the Monte Carlo code. The resulting DRFs for 3" x 3" and 6" x 6" NaI detectors are benchmarked with the extensive existing data of Heath [AEC Research and Development Report, Physics, TID-4500] for the 3" x 3" detectors and with new data for the 6" x 6" detectors. Results indicate that the approach is accurate and the use of this approach should increase the accuracy of prompt gamma-ray neutron activation analysis significantly. (C) 2003 Elsevier B.V. All rights reserved.