Method for determining the concentration of an element in a material
AssigneeElisabeth Katz
InventorAlbert Klein
Life of this patent
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Abstract
A method for determining the concentration of an element in a material includes irradiating the material with an X-ray beam having a continuum in the area of an absorption edge of the element to be measured. The intensity of the transmitted X-ray beam is measured with an energy dispersive sensor. The intensity of the transmitted X-ray beam in an energy interval above the absorption edge and in an energy interval below the absorption edge is determined. The concentration of the element is computed on the basis of said intensities.
Claims18
A method for determining the concentration of an element in a material, comprising:
- irradiating the material with an X-ray beam having a continuum in the area of an absorption edge of the element to be measured;
- measuring the intensity of the transmitted X-ray beam with an energy dispersive sensor;
- determining the intensity of the transmitted X-ray beam in an energy interval above the absorption edge and in an energy interval below the absorption edge;
- and
- computing the concentration of the element based on said intensities.
A method for determining the concentration of an element in a material comprising:
- irradiating the material with a first X-ray or gamma ray beam having an energy above an absorption edge of the element to be measured;
- irradiating the material with a second X-ray or gamma ray beam having an energy below an absorption edge of the element to be measured;
- measuring the intensities of the transmitted first and second X-ray or gamma ray beams, using a discriminator or a multi-channel connected to an X-ray detector;
- determining the difference between, or the ratio of, the intensity of the transmitted first X-ray or gamma ray beam and the intensity of second X-ray or gamma ray beam;
- and
- computing the concentration of the element based on said difference or ratio.
Dependencies are inferred from the claim text.