issue contents

Journal logoJOURNAL OF
ISSN: 1600-5775

July 2000 issue

Highlighted illustration

Cover illustration: A view inside the hutch of the crystallography beamline I711 at MAX II, see Cerenius, Ståhl, Svensson, Ursby, Oskarsson, Albertsson and Liljas, pages 203-208.

facility information

research papers

J. Synchrotron Rad. (2000). 7, 203-208
doi: 10.1107/S0909049500005331
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A new X-ray crystallographic beamline is operational at the MAX II synchrotron in Lund. The beamline is used both for macro- and small molecule diffraction as well as powder diffraction experiments.

J. Synchrotron Rad. (2000). 7, 209-214
doi: 10.1107/S0909049500004234
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The effect of the surface roughness of optical elements, such as Be windows and reflection mirrors, in synchrotron radiation beamlines on the spatial coherence of the X-ray beam is investigated systematically by means of digital simulation, in which a new model for X-ray reflection from a rough surface is proposed.

J. Synchrotron Rad. (2000). 7, 215-220
doi: 10.1107/S0909049500006646
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The efficiency of Y3Al5O12:Ce phosphor powder screens in the VUV and soft X-ray regions is reported. Also, a custom-built camera for making measurements in forward and backward modes is described.

J. Synchrotron Rad. (2000). 7, 221-228
doi: 10.1107/S0909049500005240
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A prototype X-ray detector, based on silicon microstrip technology, has been developed for energy-dispersive EXAFS studies and tested at the UK Synchrotron Radiation Source (SRS).

J. Synchrotron Rad. (2000). 7, 229-235
doi: 10.1107/S0909049500005422
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Instrumentation for time-resolved diffraction studies of transient photoinduced species is described. Equations are given for the maximum and average fractional excited-state populations as a function of lifetime, pulse frequency and efficiency of excitation.

J. Synchrotron Rad. (2000). 7, 236-244
doi: 10.1107/S0909049500004672
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Wavelength normalization of Laue X-ray diffraction data obtained using insertion devices is presented. Reproducibility and accuracy of the data-derived spectra are discussed for sources with complex spectra, such as wiggler/undulator tandems and single-line undulators.

J. Synchrotron Rad. (2000). 7, 245-250
doi: 10.1107/S0909049500005744
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A microdeformation device has been constructed and used to collect force/strain and micro-SAXS data in real time from single struts of an elastomeric polyurethane foam.

J. Synchrotron Rad. (2000). 7, 251-256
doi: 10.1107/S0909049500004210
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A total of 40 high-quality powder patterns on a manganate perovskite (Nd0.43Sr0.57MnO3) in the temperature range 105–200 K were obtained in less than 2 h by making use of synchrotron radiation and an area detector equipped with online readout capabilities. The data made possible a detailed study of the temperature dependence of the structural changes taking place in this material.

J. Synchrotron Rad. (2000). 7, 257-261
doi: 10.1107/S0909049500005252
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An experimental facility for combined high-pressure EXAFS, X-ray diffraction and photoluminescence is described.

J. Synchrotron Rad. (2000). 7, 262-266
doi: 10.1107/S0909049500007330
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How to use the classical statistical tools to estimate statistical errors on EXAFS and its Fourier transform.

J. Synchrotron Rad. (2000). 7, 267-273
doi: 10.1107/S0909049500006336
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B12 cofactors can be photoreduced by X-rays when their cobalt centre is coordinated by an inorganic ligand (water or cyanide), but not when it carries an organometallic `upper' ligand. This could be demonstrated by X-ray absorption spectroscopy.

J. Synchrotron Rad. (2000). 7, 274-279
doi: 10.1107/S0909049500000819
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A new experimental technique for reciprocal X-ray holography has been developed. The experimental set-up makes it possible to measure a reciprocal hologram without unwanted mixture of the X-ray fluorescence holography signal.

short communications

J. Synchrotron Rad. (2000). 7, 280-282
doi: 10.1107/S0909049500004295
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A large monolithic X-ray interferometer having a view size of width 25 mm and height 15 mm has been fabricated to observe large objects in phase-contrast X-ray imaging.

computer programs

J. Synchrotron Rad. (2000). 7, 283-286
doi: 10.1107/S090904950000683X
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A computer program for X-ray absorption spectroscopic data acquisition is described, including the program architecture, basic operation and graphical user interface.
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