Assessing noise sources at synchrotron infrared ports

Low-frequency noise present in the electron and photon beams of two comparable storage rings, SOLEIL and SLS, are carefully compared in the context of IR spectroscopy using the Fourier transform technique.

Status of the hard X-ray microprobe beamline ID22 of the European Synchrotron Radiation Facility

Present beamline characteristics, recent technical developments and a few recent scientific examples of the hard X-ray microprobe ID22 of the ESRF are described.

Challenges of sulfur SAD phasing as a routine method in macromolecular crystallography

A snapshot of current beamline and software capabilities for automated methods in S-SAD is presented.

The high-resolution diffraction beamline P08 at PETRA III

The high-resolution diffraction beamline P08 at the third-generation synchrotron radiation source PETRA III has become operational. It offers a six-circle and a liquid diffractometer for investigating the structure of condensed matter.

A furnace and environmental cell for the in situ investigation of molten salt electrolysis using high-energy X-ray diffraction

This paper describes the design and construction of a new molten salt cell and furnace, which together allow individual cell components such as anodes and cathodes to be studied in situ using synchrotron-based energy-dispersive X-ray diffraction. The performance of this equipment is demonstrated by an in situ study of a model inert anode within an operational Fray–Farthing–Chen Cambridge titanium electrowinning cell, using the JEEP beamline at the Diamond Light Source.

A scanning Kelvin probe for synchrotron investigations: the in situ detection of radiation-induced potential changes

A Kelvin probe set-up has been integrated at a synchrotron beamline. The in situ combination of Kelvin probe and X-ray techniques revealed surface/interface charging at the irradiated zone.

Automatic XAFS measurement system developed at BL14B2 in SPring-8

A novel automatic measurement system has been developed, in which the XAFS measurement of up to 80 samples in transmission and fluorescence modes can be carried out.

Increase of lifespan for glioma-bearing rats by using minibeam radiation therapy

A new radiotherapy technique, minibeam radiation therapy, combining submillimetric field sizes and a spatial fractionation of the dose is under development at the biomedical beamline of the ESRF. Here the therapeutic effectiveness of single-fraction minibeam radiation therapy on 9L gliosarcoma-bearing rats is assessed.

X-ray photon correlation spectroscopy in systems without long-range order: existence of an intermediate-field regime

In coherent scattering from a material with only short-range order, it is shown that there exists an `intermediate-field' regime in which the ensemble averages of the scattered intensity and of the structure factor are equal. In addition, the ensemble-averaged temporal correlations of the intensity and of the structure factor are equal.

Mechanism for enhancing dispersion of Co₃O₄ nanoparticles in Co/SiO₂ Fischer–Tropsch synthesis catalyst by adding glycol to impregnating solution: a quick-XAFS study

In situ Co K-edge quick-XAFS coupled with temperature-programmed oxidation has revealed the importance of the Co oxide–polymer interaction during calcination in enhancing Co dispersion of the glycol modified Co/SiO₂ Fischer–Tropsch synthesis catalyst.

Focusing femtosecond X-ray free-electron laser pulses by refractive lenses

It is shown that a refractive lens can focus the initial X-ray free-electron laser pulses of duration 0.3 fs to the same size as for a monochromatic beam. A general semi-analytical method of calculating the propagation of XFEL pulses through a system of refractive lenses is developed.

A flow-through reaction cell for in situ X-ray diffraction and absorption studies of heterogeneous powder–liquid reactions and phase transformations

A portable powder–liquid high-corrosion-resistant reaction cell has been designed to follow in situ reactions by X-ray powder diffraction and X-ray absorption spectroscopy techniques.

Moiré pattern from a multiple Bragg–Laue interferometer

A moiré pattern is observed by dividing the incident beam into two and formed by multiple Bragg–Laue interference fringes corresponding to the two incident beams. The coherency of X-rays from a bending-magnet beamline is evaluated using the moiré pattern.

X-ray-Raman-scattering-based EXAFS beyond the dipole limit

A description of the accurate measurement and analysis of EXAFS oscillations in X-ray Raman scattering is given.

Global and local hard X-ray tomography of a centimeter-size tumor vessel tree

Local tomography data from a set of multiscale measurements on a tumor vessel tree were quantitatively compared with global data, and algorithms were used to match the reconstructed absorption coefficients. The study shows that the systematic differences in the absorption coefficients between the local and the global data arise not only from the truncated projections but to a greater extent from the optical components of the detector used.

X-ray absorption measurements on an ultrasonic spray aerosol

The presented experiments aimed to study the feasibility of XAS measurements on the solute in a nebulized solution. The results indicate that such measurements are possible, but that high solution concentrations and/or extended sampling times are required to achieve a good signal-to-noise ratio.

Synchrotron-based spectroscopy of X-ray channeling through hollow capillary microchannels inside glass plates

Soft X-ray synchrotron radiation transmitted through microchannel plates is studied experimentally.

Circular dichroism beamline B23 at the Diamond Light Source

A description of the B23 SRCD beamline at Diamond is presented.

On the calculation of the gauge volume size for energy-dispersive X-ray diffraction. Erratum

Erratum to Rowles [(2011), J. Synchrotron Rad. 18, 938–941].

Current events

Notes for authors 2012

Forthcoming meetings and short courses