X-RAY CHEMICAL-SHIFT DETERMINATION BY ENERGY-DISPERSIVE DETECTION

X-ray energy shifts due to differences in the chemical states of the e mitting elements were investigated. The centroids of the K alpha and K beta characteristic lines produced from chromium and manganese compou nds were measured and compared with the centroids of X-ray lines produ ced from the corresponding metals. Excitation was carried out using a Cd-109 radioactive source, and the X-rays were detected with use of a Si(Li) energy dispersive semiconductor detector. SOLVER, a program inc luded in Microsoft Excel for Windows, was used to approximate the form of the X-ray lines with a gaussian function. The results showed that energy dispersive X-ray detection can be used for chemical shift deter minations.