Measurement of the gamma-ray sensitivity and signal-to-noise ratio of a new scattered-electron detector.
Measurement of the gamma-ray sensitivity and signal-to-noise ratio of a new scattered-electron detector.
复制标题
新型散射电子探测器的伽马射线灵敏度和信噪比的测量。
DOI：
10.1063/1.2976670
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Xinjian Tan
中科院分区：
文献类型：
--
作者：
L. Xia;X. Ouyang;Qunshu Wang;K. Kang;Xinjian Tan
提出了一种适用于强脉冲γ射线源测量的散射电子法探测器。该探测器在0.4-5 MeV范围内具有相对平坦的能量响应，并工作在电流模式下。利用MCNP程序对该探测器在不同条件下的性能进行了蒙特卡罗模拟研究。使用1.25 MeV线的Co-60的计算和测量之间的比较也得到解决。因此，研究由检测器产生的实验信号，并将其分解为主要分量，以确定信噪比（SNR）。后者是比较SNR计算的其他类型的检测器。
A new detector suitable for measuring high intensity pulsed gamma-ray sources and based upon scattered-electron method is proposed. The detector has a relatively flat energy response in the range of 0.4-5 MeV and works in current mode. The performances of the detector under several conditions were studied by Monte Carlo simulation using the MCNP code. A comparison between calculations and measurements performed using the 1.25 MeV line of Co-60 is also addressed. The experimental signal produced by the detector was thus studied and decomposed into its main components in order to establish the signal-to-noise ratio (SNR). The latter is compared to SNR calculated for other type of detectors.