Abstract
Experimental studies with a demountable X-ray tube vacuum spectrograph have been made of the effects of varying the X-ray tube target and the tube window thickness on the fluorescence excitation of the elements chlorine through magnesium. Cr, Fe, Co, Ni, Cu, Mo, Ag, W, Pt and Au targets have been investigated. It has been found that using a 100-μm thick beryllium window between anode and sample, a silver target provides the best excitation for all the elements investigated. With no primary beam filtration, the gold target is the most efficient in exciting the Kα spectra of silicon, aluminium and magnesium. A 400-fold increase in intensity, the latter expressed in counts sec −1 W −1, has been obtained for the Mg Kα spectrum with a gold target for the windowless X-ray tube spectrograph in comparison with the thin-window (100-μm beryllium window) X-ray spectrograph.
Published Version
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