Determination of Material Composition Using Compton Scatter
AssigneeViken Detection Corporation
InventorPeter J. Rothschild
Life of this patent
Estimating the term…
Abstract
A method of determining material composition of a target includes identifying a component of the material composition of the target by matching a Compton scattering background, in a spectrum of detected X-rays acquired by irradiating the target with a source of X-rays during a nominal source exposure time period, to a Compton scattering spectrum for the component; and reporting the material composition of the target including the identified component of the material composition.
Claims31
A method of determining material composition of a target, the method comprising:
- identifying a component of the material composition of the target by matching a Compton scattering background, in a spectrum of detected X-rays acquired by irradiating the target with a source of X-rays during a nominal source exposure time period, to a template Compton scattering spectrum for the component;
- producing a lead fluorescence spectrum for the target by using the template Compton scattering spectrum to remove the Compton scattering background from the spectrum of detected X-rays;
- calculating a proportion of lead in the target by using the Compton scattering background, the lead fluorescence spectrum, and the nominal source exposure time period;
- and
- reporting the material composition of the target including the identified component of the material composition and the proportion of lead in the target.
A method of determining material composition of a target, the method comprising:
- identifying a component of the material composition of the target by matching a Compton scattering background, in a spectrum of detected X-rays acquired by irradiating the target with a source of X-rays during a nominal source exposure time period, to a template Compton scattering spectrum for the component;
- and
- reporting the material composition of the target including the identified component of the material composition.
A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for determining material composition of a target, the method comprising:
- a) identifying a component of the material composition of the target by matching a Compton scattering background, in a spectrum of detected X-rays acquired by irradiating the target with a source of X-rays during a nominal source exposure time period, to a template Compton scattering spectrum for the component;
- b) producing a lead fluorescence spectrum for the target by using the template Compton scattering spectrum to remove the Compton scattering background from the spectrum of detected X-rays;
- c) calculating a proportion of lead in the target by using the Compton scattering background, the lead fluorescence spectrum, and the nominal source exposure time period;
- and
- d) reporting the material composition of the target including the identified component of the material composition and the proportion of lead in the target.
A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for determining material composition of a target, the method comprising:
- a) identifying a component of the material composition of the target by matching a Compton scattering background, in a spectrum of detected X-rays acquired by irradiating the target with a source of X-rays during a nominal source exposure time period, to a Compton scattering spectrum for the component;
- and
- b) reporting the material composition of the target including the identified component of the material composition.
Dependencies are inferred from the claim text.