Measurements of elastic and inelastic scattering cross-sections using monoenergetic Kα radiation

摘要

Elastic and inelastic scattering cross-sections for low, medium and high Z atoms are measured in vacuum using an X-ray tube with a secondary target as an excitation source. Monoenergetic Kα radiation emitted from the secondary target is used to excite the sample. Monoenergetic radiation is also produced using two secondary targets coupled to an X-ray tube and the radiation from the second target of the system is used to excite the sample. Elastic and inelastic scattering of Kα X-ray line energies of the secondary target by the sample are recorded with Hp Ge and Si(Li) detectors. Using this system the degree of monochromaticity of the secondary emission and the geometrical effects of the measuring system is estimated. The efficiency is larger because the secondary target acts as a converter. Experimental results based on this system will be presented and compared with theoretical estimates. The importance of the data and the potential use of the system for few applications in the field of medicine and archaeometry will also be presented.