Screening Uranium Swipe Samples Using the MMXRF

In this study, we developed the monochromatic micro-focusing X-ray fluorescence (MMXRF) which is focused on uranium detection. The MMXRF can show better results in uranium detection than the existing X-ray fluorescence (XRF). MMXRF has the improved sensitivity since it can reduce background in X-ray scattering under the fluorescence peaks by using micron-sized monochromatic X-ray beam which is generated by doubly curved crystal optics (DCC). In this study, the results will be described using real uranium swipe samples. Based on the calibration results, the real uranium swipe samples collected in KAERI was analyzed using the MMXRF. In conclusion, we could estimate uranium mass of the real uranium samples. And we select samples showing the highest values in each point to analyze in detail. Selected samples will be sent the ITU for the particle analysis. In further study, those screening results will be compared with ITU analysis results to evaluate the MMXRF in detail