Nondestructive assay of plutonium and minor actinide in spent fuel using nuclear resonance fluorescence with laser Compton scattering γ-rays
Nondestructive assay of plutonium and minor actinide in spent fuel using nuclear resonance fluorescence with laser Compton scattering γ-rays
复制标题
DOI：
10.1016/j.nima.2010.06.096
复制
发表时间：
2010-09-01
影响因子：
1.4
通讯作者：
Seya, Michio
中科院分区：
文献类型：
--
作者：
Hayakawa, Takehito;Kikuzawa, Nobuhiro;Seya, Michio
我们提出了一种在水池中对乏核燃料组件中的~(235)U、~(239)Pu和次衍生物进行无损分析的新方法。使用带有激光康普顿散射(LCS)伽马射线的核共振荧光(NRF)来检测核燃料材料。NRF分析可以提供每个同位素的指纹，因为NRF伽马射线能量是特定核素的特征。我们设计了一种高通量LCS伽马射线源，其中伽马射线是由掺Yb光纤激光器提供的激光光子与能量回收直线加速器提供的电子碰撞产生的。该系统具有以下优点：可以检测厚度为几厘米的铀等重质材料背后的大多数元素的同位素，并分析水池中的燃料组件。模拟计算表明，使用高通量LCS伽马射线源，测量时间为4000s，可以在所有燃料棒中检测到1%(239)Pu，统计误差小于2%。(C)2010爱思唯尔B.V.保留所有权利。
We propose a new nondestructive assay method for (235)U, (239)Pu, and minor actinides in spent nuclear fuel assembly in a water pool. Nuclear fuel materials are detected using nuclear resonance fluorescence (NRF) with laser Compton scattering (LCS) gamma-rays. The NRF assay can provide a finger print of each isotope since the NRF gamma-ray energy is characteristic of a specific nuclide. We design a high-flux LCS gamma-ray source, in which gamma-rays are generated by collision of laser photons provided from Yb-doped fiber laser and electrons from energy recovery linac. This system has following advantages: this can detect isotopes of most elements behind heavy materials such as uranium of a thickness of several centimeters, and analyze the fuel assembly in a water pool. A simulation calculation shows that we can detect 1% fraction (239)Pu in all the fuel rods with statistical error lower than 2% using the high flux LCS gamma-ray source and the measurement time of 4000s. (C) 2010 Elsevier B.V. All rights reserved.