X-ray diffraction by the one-dimensional superlattice with a stacking fault

The generalized pendulum analogy of the X-ray dynamical diffraction by one-dimensional regularly deformed crystals.

The pendulum analogy has been generalized in a form suitable for the case of an off-Bragg position. It is shown that, by introducing a time variation of the pendula masses, this analogy can be supplied to simulate the X-ray dynamical diffraction by a one-dimensional regularly deformed crystal. The correspondence between the adiabatic invariants of the new mechanical system and the invariants of...

Three-dimensional diffraction mapping by tuning the X-ray energy

Three-dimensional reciprocal-space maps of a single SiGe island around the Si(004) Bragg peak are recorded using an energy-tuning technique with a microfocused X-ray beam with compound refractive lenses as focusing optics. The map is in agreement with simulated data as well as with a map recorded by an ordinary rocking-curve scan. The energy-tuning approach circumvents both the comparatively la...

Two-dimensional X-ray powder diffraction

Characterization of individual stacking faults in a wurtzite GaAs nanowire by nanobeam X-ray diffraction

Coherent X-ray diffraction was used to measure the type, quantity and the relative distances between stacking faults along the growth direction of two individual wurtzite GaAs nanowires grown by metalorganic vapour epitaxy. The presented approach is based on the general property of the Patterson function, which is the autocorrelation of the electron density as well as the Fourier transformation...

X-Ray Diffraction by NaCl

Abstract: Previous studies have shown that X-rays are produced by electrically accelerating electrons produced by thermionic emission from a hot filament. The emitted electrons are then directed toward a crystal via collimator to study crystal properties. When the target material of the X-ray tube is bombarded with electrons accelerated from the cathode filament, two types of X-ray spectra are ...