X-Ray Elemental Detection Scheme Based on Dual-Source Monochromatisation Technology

A solution utilizing dual-source monochromatization technique is proposed to address the imprecision issue in traditional single-source X-ray spectroscopy. The solution employs Ag and W elements as anode excitation materials in dual X-ray tubes. By utilizing a fully focusing hyperbolic bent crystal, it filters multi-colored X-rays with scattered light into a single wavelength, reducing interference noise in the sample's X-ray fluorescence spectrum. This approach enables a wider element detection range and improved measurement accuracy. Experimental results show that the proposed solution achieves a relative standard deviation of less than 3.86% in measuring copper ore samples. Compared to traditional single-source single-wavelength excitation, it can additionally detect MgO and Cr, reducing measurement error by approximately 10% and exhibiting good linear correlation in major element measurements.

I. Introduction

With the intensification of global pollution, the importance of environmental protection and awareness is increasingly evident. Accurately analyzing the distribution and content of elements in various environmental contexts and investigating the mineral element ratios in geological environments will become crucial topics for future research.