Interbranch transient beating of X-ray intensities in deformed crystals.
X-ray dynamical diffraction in a deformed crystal is studied using the interbranch resonance concept. It is shown that appreciable beating of the X-ray intensities may be induced by a lattice distortion that produces interbranch transformations of the local dispersion surface. In X-ray plane-wave topography, this effect may be observed as interference fringes arising around the kinematical image of a defect. It is predicted that such interbranch fringes can be induced by edge dislocations.
X-ray interbranch resonance as a new idea to solve the diffraction problem for bent crystals
The resonance concept is extended for x-ray interbranch scattering by a bent crystal with a uniform strain gradient. Splitting each of the branches of the dispersion surface follows from these considerations. It is shown that interbranch crossover is due to interference of the waves corresponding to ‘new’ branches, making up the ‘new’ Bloch-modes.
Can family language policy predict linguistic, socio-emotional and cognitive child and family outcomes? A systematic review
Multilingual families face decisions about the linguistic upbringing of their children. These decisions shape their family language policy (FLP) which potentially impacts the children and their fam...