Notes for Authors

Monitoring Phase Transitions using a Single Data Frame in Neutron Time-of-Flight Laue Diffraction

The possibilities of applying neutron time-of-flight Laue diffraction in monitoring structural changes in single crystals are considered. Simulations show that useful structural information can be obtained from single data frames (single shots), leading to a substantial improvement in the time resolution for following such changes.

Diffraction by Diffusely Scattering Materials of High Transparency

Simple methods are presented of correcting the wide-range X-ray diffraction patterns of diffusely scattering materials for distortion due to finite speciment length, high transparency, strong Compton scattering and contributions from small-angle scattering.

A Multilayer-Coated Diffraction-Grating Device for Polarized and Unpolarized Neutron Interferometry

The use of multilayer coatings in the classical Ioffe diffraction-grating neutron interferometer is proposed. This interferometer combines the properties of two periodic structures: dispersion by a diffraction grating and high reflectivity because of the multilayer coating.

The Combination of Thermal Analysis and Time-Resolved X-ray Techniques: a Powerful Method for Materials Characterization

A new differential thermal analyser has been developed suitable for combining with time-resolved X-ray equipment. The use of this instrument with simultaneous SAXS, SAXS/WAXS and energy-dispersive powder diffraction experiments is described.

Time-Resolved X-ray Diffraction Study of the Staging Phase Transition in CuCl₂-Intercalated Graphite

A real-time X-ray diffraction study of staging phase transitions in CuCl₂-intercalated graphite during deintercalation in ambient air has been carried out. A position-sensitive detector was used to perform the real-time quantitative phase analysis at different stages of the deintercalation reaction.

Akima Interpolation: a Tool used in Direct Slit-Length Desmearing Procedures of Non-Frequency-Limited X-ray Scattering Curves

Direct slit-collimation correction of small-and wide-angle scattering data from semicrystalline materials on the basis of Akima polynomials and slit functions renders Soller-slit collimation unnecessary. A gain factor of four or five in scattered intensity results.

Spatial-Distortion Corrections, for Laue Diffraction Patterns Recorded on Image Plates, Modelled using Polynomial Functions

A polynomial-based spatial-distortion correction, derived from the diffraction pattern, has been used to enable good spot-position prediction for processing Laue diffraction data recorded on an image plate.

Attenuation corrections for X-ray and neutron fibre diffraction studies

The form of the transmission factor for sample geometries encountered in X-ray and neutron fibre diffraction studies is considered.

XABS2: an empirical absorption correction program

The paper describes an algorithm for an empirical post-solution absorption correction. Only F_obs and structural parameters (isotropic level) are required.

High-resolution triple-crystal X-ray diffraction experiments performed at the Australian National Beamline Facility on a silicon sample with lateral periodic superstructure

An ion-implanted Si(111) sample with lateral periodic superstructure has been studied by high-resolution triple-crystal diffractometry at the Australian National Beamline Facility of the Photon Factory synchrotron. Detailed analysis of the data will yield a map, as a function of lateral position and depth, of the lattice distortions perpendicular to the sample surface.

A possible new route to precise lattice-parameter measurement of perfect crystals using the divergent-X-ray beam method

Fine-scale dark streaks, only a few arc seconds in angular width, are discovered within the area of overlap at Kossel-line intersections. They delineate loci of coherent multiple diffraction and impose potentially useful markers on the broad-line divergent-beam pattern.

SORTX - a program for on-screen stick-model editing and autosorting of SHELX files for use on a PC

SORTX generates a stick model of the atoms or peaks in a SHELX file on a PC screen. Atoms are selected and renamed or deleted using the mouse.

PARSET and PARSYM - production of files for neutron powder structure refinement program MORGUE and solution/refinement program PARAM

Interactive computer programs (PARSET and PARSYM) are described that create input files for programs MORGUE and PARAM, which perform neutron powder structure refinement solution with rigid-body positional and thermal-motion constraints.

Crystallographers

Nominations for the Ewald Prize

Notes and News

New Commercial Products

Handbook of crystal growth. Vol. 1: Fundamentals. a: thermodynamics and kinetics; b: transport and stability edited by D. T. J. Hurle

Accuracy in powder diffraction II edited by E. O. Prince and J. K. Stalick

Out of the crystal maze. Chapters from the history of solid-state physics edited by L. Hoddeson, E. Braun, J. Teichmann and S. Weart

Random, non-random and periodic faulting in crystals by M. T. Sebastian and P. Krishna