September 2001 issue
Cover illustration: Composite diagram showing the different aspects of synchrotron radiation covered by the Journal of Synchrotron Radiation
A new compact high-resolution monochromator design optimized for Bragg angles near 90° provides 0.52 meV resolution and 2 × 108 photons s−1 at 25.65 keV.
Calculations are presented for the femtosecond time-evolution of intensities of beams diffracted by perfect Bragg crystals illuminated with radiation expected from hard X-ray free-electron lasers operating through the self-amplified spontaneous emission process.
This paper experimentally confirms that sagittal focusing of X-ray beams by diffraction at an inclined diffractor can be more than five times increased using symmetrical inclined diffractors.
A detailed finite element analysis of the nonlinear thermal distortions of a cryogenically cooled silicon monochromator is presented. The results show the need to include true volumetric depth-dependent heat loading.
New prospects are open for high-pressure protein crystallography using ultra-short-wavelength X-rays and diamond-anvil cells.
X-ray absorption magnetic circular dichroism studies of 3d transition-metal samples pose severe detection problems – electron emissions are badly affected by the strong magnetic fields and X-ray emission is weak and low energy. A specially developed gas microstrip detector is shown to be able to deliver satisfactory X-ray fluorescence scans.
An imaging-plate camera for X-ray powder diffraction experiments has been installed on the synchrotron radiation beamline GILDA at the ESRF. It can be used in fixed data-collection mode of the whole diffraction rings, or in translation mode for time-dependent experiments.
A report on the 2001 workshop on `Future Applications of Science with Synchrotron Radiation and Free-Electron Lasers in Europe', Grenoble (ESRF).