Measurement of K x-ray intensity ratio of tin, gadolinium and dysprosium

Full text: Measurement of Kβ to Kα x-ray intensity ratios are important not only in the field of atomic physics, radiation physics and medical physics, but also to test the validity of assumptions made in the theoretical prediction. The intensity ratios can also give information on the effect of physical and chemical environment of the element in the compound. Many investigators have adopted a single and double reflection geometries to measure the Kβ to Kα x ray intensity ratios to understand the effect of physical and chemical environment on x-ray fluorescence. The targets are excited by a radioactive source of having activity of the order 100 MBq. in order to carry out accurate measurement Kβ to Kα x-ray intensity ratios, we have develop 2π geometrical configuration method : placing a target right on the surface of the detector facing the target to measure the K shell fluorescence parameters such as fluorescence yield, fluorescence cross section and ratio of radiative width to nonradiative width. The target are excited by a weak radioactive source of strength of the order of 100 kBq. in the present experiment we have extended our measurement to Kβ to Kα x-ray intensity ratios of Tin, Gadolinium and Dysprosium, elemental targets. The targets are excited by 59.6 keV gamma radiation from 241Am source. The K x-ray photons detector with a Si(Li) x- ray detector of the type SLP-01670 coupled to a 8k multi channel analyzer. The measure valued Kβ to Kα x-ray intensity ratios for the above elemental targets closely agree with the theoretical values predicted, This indicates 2π geometrical configuration method for measurement of L x-ray intensity ratio also