Material analysis
First Claim
1. A method of determining characteristics of a test crystalline material in which method a sample of the material is illuminated with a collimated beam of polychromatic X-ray photons, to produce diffracted X-rays, measurements are taken of the produced diffracted X-rays with an energy-dispersive detector receiving them via a collimator, and by comparing the found measurements with similar data defining known, reference materials, there are determined the required characteristics of the test material, which method is characterized in thatthe test crystalline material is a drill core rock sample of a cylindrical shape having a core axis;
- the beam of X-ray photons has a brightness of at least 1015 photons/sec/mrad2 /0.1% bandwidth and energies of at least 20 keV;
and further characterized in that the relative position of the sample and the beam is moved in the direction of the core axis so as to determine characteristics of a plurality of portions along the core axis of the rock sample.
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Accused Products
Abstract
A method and apparatus for analyzing drill core rock samples is described, utilizing a collimated beam of polychromatic X-ray photons of a brightness of at least 1015 photons/sec/mrad2 /0.1% bandwidth and energies of at least 20 keV. A suitable source of such X-rays is a synchrotron.
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Citations
15 Claims
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1. A method of determining characteristics of a test crystalline material in which method a sample of the material is illuminated with a collimated beam of polychromatic X-ray photons, to produce diffracted X-rays, measurements are taken of the produced diffracted X-rays with an energy-dispersive detector receiving them via a collimator, and by comparing the found measurements with similar data defining known, reference materials, there are determined the required characteristics of the test material, which method is characterized in that
the test crystalline material is a drill core rock sample of a cylindrical shape having a core axis; -
the beam of X-ray photons has a brightness of at least 1015 photons/sec/mrad2 /0.1% bandwidth and energies of at least 20 keV; and further characterized in that the relative position of the sample and the beam is moved in the direction of the core axis so as to determine characteristics of a plurality of portions along the core axis of the rock sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for use in a method of determining characteristics of a drill core rock sample comprising:
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a collimated beam source of polychromatic X-ray photons of a brightness of at least 1015 photons/sec/mrad2 /0.1% bandwidth and energies of at least 20 keV; mounting means for mounting a cylindrically shaped solid drill rock sample core having a core axis in the line of the X-rays from the source, whereby the X-rays may be diffracted by the test sample; collimation means for collimating some of the diffracted X-rays into a narrow parallel beam; an energy-dispersive detector receiving the collimated diffracted X-rays, and making measurements thereof; comparison means for comparing the thus-made measurements with similar data defining known, reference materials, and thereby for determining the required characteristics of the test material; and means for changing the relative positions of the rock sample and the beam so as to cause the rock sample to translocate in the direction of the core axis. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification