Journal of Synchrotron Radiation

 

J. Synchrotron Rad. (2008). 15, 323-328  [ doi:10.1107/S0909049508004524 ]

Spatial resolution limits for synchrotron-based spectromicroscopy in the mid- and near-infrared

E. Levenson, P. Lerch and M. C. Martin

Synopsis: Spatial resolution measurements at Advanced Light Source beamline 1.4.4 are used to determine the wavelengths at which a cross-over from diffraction-limited to electron-beam-source-size-limited resolution occurs. Performance is then predicted for different synchrotrons, beamline optics and endstation microscopes.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 329-334  [ doi:10.1107/S0909049508006638 ]

In situ observation of water distribution and behaviour in a polymer electrolyte fuel cell by synchrotron X-ray imaging

T. Mukaide, S. Mogi, J. Yamamoto, A. Morita, S. Koji, K. Takada, K. Uesugi, K. Kajiwara and T. Noma

Synopsis: An in situ synchrotron X-ray imaging technique for visualizing the water in a polymer electrolyte fuel cell has been developed. The technique is very effective and useful for studying water management in a polymer electrolyte fuel cell.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 335-340  [ doi:10.1107/S0909049508008418 ]

Comparison of calculated brightness and flux of radiation from a long-period wiggler and a short-period undulator

T. Shaftan, S. L. Hulbert and L. Berman

Synopsis: The radiation properties of two classes of insertion devices, a long-period wiggler and a short-period undulator, are calculated and compared, using different computer codes. Special care is found to be needed when modeling these properties.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 341-349  [ doi:10.1107/S0909049508008960 ]

Optimization of a Bonse-Hart instrument by suppressing surface parasitic scattering

M. Sztucki, J. Gorini, J.-P. Vassalli, L. Goirand, P. van Vaerenbergh and T. Narayanan

Synopsis: An optimized crystal design for a low-background Bonse-Hart camera for small-angle X-ray scattering is presented. Details about achieving the best surface quality of the crystals are described giving also perspectives for further applications in X-ray optics.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 350-354  [ doi:10.1107/S0909049508003695 ]

Measurement of underground motion at the SSRF site

X. Wang, L. Chen, H. Du and L. Yin

Synopsis: Research on underground motion at the SSRF site with and without a heavy truck is reported.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 355-362  [ doi:10.1107/S0909049508008509 ]

Differential phase contrast with a segmented detector in a scanning X-ray microprobe

B. Hornberger, M. D. de Jonge, M. Feser, P. Holl, C. Holzner, C. Jacobsen, D. Legnini, D. Paterson, P. Rehak, L. Strüder and S. Vogt

Synopsis: A segmented transmission detector has been developed and installed at sector 2 instruments at the Advanced Photon Source for differential phase-contrast imaging in parallel with absorption and fluorescence measurements.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 363-370  [ doi:10.1107/S0909049508011370 ]

A high-spatial-resolution three-dimensional detector array for 30-200 keV X-rays based on structured scintillators

U. L. Olsen, S. Schmidt and H. F. Poulsen

Synopsis: A three-dimensional structured scintillator capable of 1 µm resolution has been characterized with Monte Carlo simulations for 30-200 keV X-rays with a factor of 5-15 gain in efficiency over unstructured scintillators.

Online 15 May 2008

 

J. Synchrotron Rad. (2008). 15, 371-373  [ doi:10.1107/S0909049508007607 ]

Silicon nitride transmission X-ray mirrors

S. Cornaby and D. H. Bilderback

Synopsis: X-ray transmission mirrors, which function as high-pass energy filters, have been made out of silicon nitride and tested in synchrotron X-ray beams. The high-energy cut-off can be selected by adjusting the incidence angle of the transmission mirror.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 374-377  [ doi:10.1107/S0909049508003725 ]

Element-specific microtomographic imaging of Drosophila brain stained with high-Z probes

R. Mizutani, A. Takeuchi, G. Akamatsu, K. Uesugi and Y. Suzuki

Synopsis: Element-specific microtomographic analysis of the central nervous system of adult Drosophila melanogaster stained with gold and platinum probes has revealed the nerve tissue structure responsible for biological functions.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 378-384  [ doi:10.1107/S0909049508006420 ]

X-ray photon correlation spectroscopy under flow

A. Fluerasu, A. Moussaïd, P. Falus, H. Gleyzolle and A. Madsen

Synopsis: X-ray photon correlation spectroscopy was performed on a colloidal suspension of hard spheres under shear flow. This study describes a new experimental method that can be used to avoid X-ray-induced beam damage while measuring `internal' mesoscale dynamics in soft-matter or biological systems.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 385-391  [ doi:10.1107/S090904950800650X ]

Mechanical stability of the magnet girder assembly at the SSRF

X. Wang, L. Chen, Z. Yan, H. Du and L. Yin

Synopsis: The SSRF R&D magnet girder assemblies are structure optimized. Vibration measurements have been performed to investigate the mechanical stability and influence of cooling water on magnet vibration.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 392-398  [ doi:10.1107/S0909049508007486 ]

High-resolution angular beam stability monitoring at a nanofocusing beamline

R. Tucoulou, G. Martinez-Criado, P. Bleuet, I. Kieffer, P. Cloetens, S. Labouré, T. Martin, C. Guilloud and J. Susini

Synopsis: Two semi-transparent X-ray beam-position monitors have been developed to study the submicroradian angular stability of the X-ray beam at a nanofocusing beamline.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 399-410  [ doi:10.1107/S0909049508003658 ]

Aberration theory of plane-symmetric grating systems

L.-J. Lu

Synopsis: The groove-function dependence of the wavefront aberration coefficients of gratings is reported.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 411-413  [ doi:10.1107/S0909049508013010 ]

On the use of clessidra prism arrays in long-focal-length X-ray focusing

W. Jark, M. Matteucci and R. H. Menk

Synopsis: X-ray kinoform lenses of the clessidra type, which are composed of many small triangular prisms, can be used under suitable conditions effectively as arrays of refractive micro-lenses. These arrays can provide relatively large apertures in long-focal-length focusing.

Online 15 May 2008

 

J. Synchrotron Rad. (2008). 15, 414-419  [ doi:10.1107/S0909049508003944 ]

Versatile vacuum chamber for in situ surface X-ray scattering studies

D. Carbone, O. Plantevin, R. Gago, C. Mocuta, O. Bikondoa, A. Alija, L. Petit, H. Djazuli and T.-H. Metzger

Synopsis: A vacuum-compatible portable chamber, optimized for working in a middle-pressure regime and adaptable to UHV conditions, is presented. Its compact design and its modularity are highlighted. These characteristics make it a very versatile piece of equipment, useful for in situ X-ray scattering studies of various systems under different conditions.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 420-422  [ doi:10.1107/S0909049508009606 ]

Light flux density threshold at which protein denaturation is induced by synchrotron radiation circular dichroism beamlines

A. J. Miles, R. W. Janes, A. Brown, D. T. Clarke, J. C. Sutherland, Y. Tao, B. A. Wallace and S. V. Hoffmann

Synopsis: Radiation damage by heating of samples at high-flux synchrotron radiation circular dichroism spectroscopy beamlines can result in protein denaturation. This study compares the degree of damage that occurs at a number of beamlines worldwide in order to define the threshold beam flux density above which significant denaturation occurs.

Online 8 May 2008

 

J. Synchrotron Rad. (2008). 15, 423-424  [ doi:10.1107/S0909049508017330 ]

Current events

Online 14 June 2008