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To maintain accuracy and stability in desktop X-ray diffractometers, regular calibration using standards like silicon and environmental controls (temperature, humidity, cleanliness) are essential. Proper maintenance, stable power supply, operator training, and timely updates further ensure reliable long-term performance and data integrity.
Powder XRD enables non-destructive residual stress analysis by detecting lattice strain via diffraction peak shifts, using the fixed ψ method and Hooke's law. It's vital for materials, aerospace, automotive, and manufacturing.
Benchtop X-ray Diffractometers are vital for quality control, providing non-destructive, precise analysis of material crystal structure, composition, and stress. They enable defect detection, process optimization, and failure analysis across R&D and production, enhancing efficiency, reliability, and compliance.
A single-crystal X-ray diffractometer reveals 3D atomic structure by analyzing X-ray diffraction patterns (Bragg's Law). Through data collection, Fourier transformation, and model refinement, it generates electron density maps to determine molecular configurations.
This guide details XAS experiment design, emphasizing uniform sample preparation (e.g., grinding, dilution, inert handling) and precise measurement control (e.g., scan ranges, beam parameters, data averaging). Proper execution ensures reliable data on local atomic structure, vital for catalysis and energy materials research.
XAS, an advanced synchrotron-based technique, analyzes X-ray absorption to reveal atomic-scale local electronic states and geometric structures (via XANES and EXAFS) nondestructively, widely used in materials and energy research.
A quality single crystal for X-ray diffraction requires optimal solvent choice (moderate solubility/volatility), proper growth method (evaporation/diffusion), high sample purity, and a vibration-free environment to ensure well-defined morphology and minimal defects.
This article details a comprehensive three-pronged strategy to eliminate higher-order diffraction interference in X-ray single-crystal analysis. The methods involve hardware filtration at the source using monochromators and slits, parameter optimization during data collection to suppress detection, and software correction algorithms for residual effects in data processing. This combined approach ensures high-precision crystal structure determination by controlling intensity errors.
XRD analyzers use Bragg's Law to measure diffraction angles, enabling non-destructive decoding of crystal phases, lattice constants, grain size, and stress from interplanar spacing changes.
The Physical Foundation of X-ray Diffractometer (for Stress Measurement): In-depth Derivation of Diffraction Geometry and the Stress-Strain Relationship