Multiple characteristic X-rays from one single element Full scale =2.69 k counts Cursor:2.7875 keV The ratio between different lines keeps constant for one element. Ba e Ba TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 0 2 5 6 8 9 10 keV 16Multiple characteristic X-rays from one single element 16 L L L The ratio between different lines keeps constant for one element. L1