issue contents

Journal logoJOURNAL OF
ISSN: 1600-5775

May 2007 issue

Highlighted illustration

Cover illustration: Difference intensities in small-angle scattering from laser-excited gold nanoparticles in water at delays of 300 ps (left) and 1 µs (right), which show the signatures of expanding vapor bubbles and the particle morphology (see Plech, Kotaidis, Istomin and Wulff, pages 288-294). The graph shows the radially integrated data for a set of increasing laser fluences and accordingly growing vapor bubbles.

facility information

research papers

J. Synchrotron Rad. (2007). 14, 233-243
doi: 10.1107/S0909049507013118
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Beamline X28C, at the National Synchrotron Light Source of Brookhaven National Laboratory, functions as a platform for synchrotron footprinting research for structural mapping of proteins and nucleic acids. The article provides a summary of the X28C beamline technology, published results and defines protocols for its adoption at other synchrotron facilities.

J. Synchrotron Rad. (2007). 14, 244-251
doi: 10.1107/S0909049507009727
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The new set-up for small-angle and wide-angle X-ray scattering at beamline BL9 of the Dortmund Electron Accelerator (DELTA) is presented. First measurements of small-angle X-ray scattering on lysozyme solutions and a study of crystallographic texture of α-chitin and calcite in lobster and crab shell are discussed.

J. Synchrotron Rad. (2007). 14, 252-256
doi: 10.1107/S0909049507007959
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Optically activated fluorozirconate-based glass ceramics are promising candidates as X-ray detectors. The influence of the glass matrix on the scintillation properties of the embedded nanocrystals is investigated as a function of X-ray energy, particle size and structure of the embedded nanocrystals.

J. Synchrotron Rad. (2007). 14, 257-271
doi: 10.1107/S0909049507011260
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X-ray detected magnetic resonance (XDMR) is a new element-selective spectroscopy in which X-ray magnetic circular dichroism is used to probe the resonant precession of spin and orbital magnetization components when a strong microwave pump field is applied perpendicularly to the static bias field. Experimental configurations and instrumentation suitable to detect the very weak XDMR signal are compared. XDMR data collected at both the spin–orbit split Y L-edges and at the Fe K-edge on yttrium iron garnet films are shown to yield unique information regarding the precession dynamics of induced spin and orbital components.

J. Synchrotron Rad. (2007). 14, 272-275
doi: 10.1107/S0909049507014409
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The glancing-emergent-angle (GEA) method of fluorescence detection has been applied for polarized XAFS studies of single crystals of Cr-doped vanadium sesquioxides. The GEA method is non-destructive, suitable for in situ studies of single crystals and is thus a significant improvement over their powder analysis.

J. Synchrotron Rad. (2007). 14, 276-281
doi: 10.1107/S0909049507013593
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The development of an optimized fuel cell for in situ X-ray absorption experiments is discussed and examples of usage are presented.

J. Synchrotron Rad. (2007). 14, 282-287
doi: 10.1107/S0909049507009004
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An X-ray microtomographic analysis of the Drosophila larvae brain was performed to visualize the neuronal network.

J. Synchrotron Rad. (2007). 14, 288-294
doi: 10.1107/S0909049507011144
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Pump–probe scattering on femtosecond laser-excited nanoparticle suspensions in the small-angle regime is used to explore the particle and solvent dynamics.

laboratory notes

J. Synchrotron Rad. (2007). 14, 295-296
doi: 10.1107/S090904950701117X
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A flexible heat-load shutter currently operating at a frequency of 946 Hz and window times of 20 µs, and capable of absorbing ∼99% of the heat generated by a synchrotron beam, is described.

current events

J. Synchrotron Rad. (2007). 14, 297-298
doi: 10.1107/S090904950701583X
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