Integrated X-ray detection system for determination of nuclear material concentration

An integrated system of X-ray Absorption Spectrometry (XAS), also called L-edge densitometry for uranium (LED) and X-ray Fluorescence spectrometry (XRF) is designed using Monte Carlo simulation for determining concentration of uranium and minor actinides for safeguards. The equipment is compact compared to the K-edge densitometer with high purity germanium detector with liquid nitrogen cooling due to using a low energy X-ray source and a heavy shielding system. The system has been validated from simulation and analysis of the LED/XRF spectrum from this feasibility study.