Journal of Synchrotron Radiation

 

J. Synchrotron Rad. (1998). 5, 1243-1249  [ doi:10.1107/S0909049598002271 ]

Conserving the Coherence and Uniformity of Third-Generation Synchrotron Radiation Beams: the Case of ID19, a `Long' Beamline at the ESRF

J. I. Espeso, P. Cloetens, J. Baruchel, J. Härtwig, T. Mairs, J. C. Biasci, G. Marot, M. Salomé-Pateyron and M. Schlenker

Synopsis: This paper reports on the problems encountered and the actions taken at a third-generation synchrotron beamline in order to retain a homogeneous beam and good coherence

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1250-1257  [ doi:10.1107/S0909049598004002 ]

High-Focusing Bragg-Crystal Polychromator Design for Energy-Dispersive X-ray Absorption Spectroscopy

J. Pellicer-Porres, A. San Miguel and A. Fontaine

Synopsis: The design and characterization of a contoured crystal polychromator for energy-dispersive EXAFS is presented. It gives a full spot between 20 and 40  µm full size in the 5-12  keV energy range.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1258-1262  [ doi:10.1107/S090904959800658X ]

Anomalous Wide-Angle X-ray Scattering Apparatus on the GILDA Beamline at the ESRF

C. Meneghini, A. Balerna, F. Boscherini, S. Pascarelli and S. Mobilio

Synopsis: A description of the experimental apparatus for anomalous wide-angle X-ray scattering (AWAXS) on the GILDA beamline at the ESRF is given.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1263-1269  [ doi:10.1107/S0909049598006803 ]

Station 16.3: a High-Resolution Single-Crystal Diffraction Facility at the SRS, Daresbury

S. P. Collins, R. J. Cernik, B. Fell, C. C. Tang, N. W. Harris, M. C. Miller and G. Oszlanyi

Synopsis: The design of a high-resolution single-crystal diffraction facility at the SRS, Daresbury Laboratory, is outlined. Several experimental examples are given, including a study of magnetoelastic strain in ferromagnetic US.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1270-1274  [ doi:10.1107/S0909049598007870 ]

Angular Resolution of Parallel Foils on a Synchrotron Powder Diffractometer

M. A. Roberts and C. C. Tang

Synopsis: A comparative study of the resolution function for 100  µm- and 200  µm-spaced parallel-foil collimators for high-resolution powder diffraction at the synchrotron X-ray source, Daresbury Laboratory.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1275-1281  [ doi:10.1107/S0909049598004026 ]

DAFS Experiments with Non-Centrosymmetric Single Crystals

D. C. Meyer, K. Richter, A. Seidel, J. Weigelt, R. Frahm and P. Paufler

Synopsis: It is shown for the first time that, similar to single-crystal structure analysis, the lack of inversion symmetry has significant impact on the DAFS signal, so that DAFS may contribute to structure analysis as well.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1282-1286  [ doi:10.1107/S0909049598000788 ]

High-Pressure Solution X-ray Scattering of Protein Using a Hydrostatic Cell with Diamond Windows

M. Kato and T. Fujisawa

Synopsis: A hydrostatic pressure cell (maximum pressure 700 MPa) with synthetic diamond windows is applied to quantitatively measure small-angle X-ray scattering of lysozyme at high pressure.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1287-1297  [ doi:10.1107/S0909049598004142 ]

SEDEM, a Software Package for EXAFS Data Extraction and Modelling

D. Aberdam

Synopsis: These DOS-Windows running programs for X-ray absorption analysis are written to give the user a tool to undertake all steps of data processing and modelling, rather than making use of the most recent programming facilities. They are in use at the Collaborative Research Group on Interfaces, at the ESRF in Grenoble, France.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1298-1303  [ doi:10.1107/S0909049598004154 ]

Quarter-Wave Plates and X-ray Magnetic Circular Dichroism on ID24 at the ESRF

S. Pizzini, M. Bonfim, F. Baudelet, H. Tolentino, A. San Miguel, K. Mackay, C. Malgrange, M. Hagelstein and A. Fontaine

Synopsis: The first XMCD measurements carried out on the ID24 energy-dispersive XAS beamline at the ESRF are reported. Circular-polarized X-rays are obtained using perfect diamond crystals as quarter-wave plates.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1304-1308  [ doi:10.1107/S0909049598006797 ]

Characterization of Thin Polymer Films by X-ray Reflectometry with Synchrotron Radiation

K. Kago, H. Endo, H. Matsuoka, H. Yamaoka, N. Hamaya, M. Tanaka and T. Mori

Synopsis: X-ray reflectivity measurements with a synchrotron radiation source were carried out for thin polymer films on a glass plate. The film thickness and surface and interface roughnesses were determined by curve fitting and Fourier transform procedures.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1309-1316  [ doi:10.1107/S0909049598001447 ]

Synchrotron X-ray Imaging of the Electron Density in RFeO₃ (R = Y, Ho) Using an APD Detector

V. A. Streltsov, N. Ishizawa and S. Kishimoto

Synopsis: The deformation electron densities () have been determined for synthetic orthoferrites, RFeO₃ (R = Y, Ho), using both scintillation and fast avalanche photodiode (APD) detectors for focused synchrotron X-radiation at wavelengths of 0.70 and 0.84  Å. The APD images indicate strongly that the electron density is perturbed significantly by the cation-cation magnetic interactions.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1317-1320  [ doi:10.1107/S0909049598002970 ]

Multiple solutions in data fitting: a trap in EXAFS structural analysis and some ideas to avoid it

A. Michalowicz and G. Vlaic

Synopsis: A possible source of error on interatomic distance determination in EXAFS multishell data analysis is described.

Online September 1998

 

J. Synchrotron Rad. (1998). 5, 1322  [ doi:10.1107/S090904959801067X ]

New synchrotron source in the UK

Online September 1998