EFFECTS OF X-RAY ABSORBERS DESIGNED FOR SOME SAMPLES IN PIXE ANALYSES

X-ray absorbers specialized for some samples, which contain vast amounts of certain elements, have been designed and tried. By means of these absorbers, x-ray spectra in which some distinguished x-ray peaks exist become fairly gentle-sloping over a wide x-ray energy range, and consequently, both sensitivity and efficiency of measurements are fairly improved. Furthermore, these absorbers enable us to analyze all elements simultaneously, to save measuring time and also to improve accuracy of analysis. Transmission curves of these absorbers are determined using techniques developed by us, and the accuracy has been confirmed by analyzing a few standard samples.