X ray crystal diffraction12/16/2023 ![]() ![]() In our lab, we measure two types of mounts: (1) random powder mounts and (2) oriented clay mounts. Amorphous materials, such as glass, do not produce a diffraction pattern, but only broad scattering peaks. Using the software diffrac.eva (Bruker), we compare the diffraction pattern to a standard reference (PDF-4) and/or calculated patterns to identify minerals in a sample. Each mineral has a set of spacings between planes of atoms. Bragg’s Law relates the wavelength of electromagnetic radiation to the spacing between planes of atoms in a crystal lattice and the angle of diffraction. When a focused monochromatic X-ray beam, with a wavelength similar to the spacing between atoms in the crystal lattice, interacts with these planes of atoms, constructive interference takes place and part of the beam is diffracted. The three-dimensional structure of crystals is defined by regular, repeating planes of atoms that form a crystal lattice. XRD is a nondestructive analytical technique used to identify (and quantify) minerals and other crystalline materials in samples. The detector is a LYNXEYE XE-T with 192 measuring points. The instrument is a Bruker-AXS D8 ADVANCE X-ray diffractometer DAVINCI design with sample changer. The Sedimentology lab of the GeoLab has an XRD since September 2017. Contact information for prospective students.Communications and Marketing Department.Access to international research facilities.Paleomagnetism Group & Paleomagnetic Laboratory.Earth Simulation Laboratory Close submenu +.Webinar use of nanoSIMS in Life Sciences.Webinar use of nanoSIMS in Earth Sciences.Multiscale Porous Media Lab Close submenu +.Fourier-transform infrared spectroscopy.Our labs and facilities Close submenu +.Laboratories and Collaboration Close submenu +.Training for professionals Close submenu +. ![]()
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