Journal of Synchrotron Radiation

 

J. Synchrotron Rad. (2008). 15, 427-432  [ doi:10.1107/S0909049508018438 ]

A twelve-analyzer detector system for high-resolution powder diffraction

P. L. Lee, D. Shu, M. Ramanathan, C. Preissner, J. Wang, M. A. Beno, R. B. Von Dreele, L. Ribaud, C. Kurtz, S. M. Antao, X. Jiao and B. H. Toby

Synopsis: A newly designed 12-analyzer detector system for high-resolution powder diffraction has been installed at beamline 11-BM, a dedicated powder diffraction beamline, at the Advanced Photon Source. Initial characterization of the instrument is presented.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 433-439  [ doi:10.1107/S0909049508014945 ]

On-line optical and X-ray spectroscopies with crystallography: an integrated approach for determining metalloprotein structures in functionally well defined states

M. J. Ellis, S. G. Buffey, M. A. Hough and S. S. Hasnain

Synopsis: A single-crystal microspectrophotometer has been implemented on SRS beamline 10.1 providing a unique facility for combined crystallographic with on-line XAS-optical spectroscopic measurements from the same crystal. The need for such an approach is highlighted by data showing the rapid X-ray photoreduction of type-1 Cu centres.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 440-448  [ doi:10.1107/S0909049508017652 ]

Disentanglement of magnetic contributions in multi-component systems by using X-ray magnetic circular dichroism at a single absorption edge

J. Chaboy, M. Á. Laguna-Marco, C. Piquer, R. Boada, H. Maruyama and N. Kawamura

Synopsis: The feasibility of X-ray magnetic circular dichroism to perform element-specific magnetometry by using a single X-ray absorption edge is demonstrated in the case of rare-earth transition-metal intermetallics.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 449-457  [ doi:10.1107/S0909049508018931 ]

Application of a pnCCD in X-ray diffraction: a three-dimensional X-ray detector

W. Leitenberger, R. Hartmann, U. Pietsch, R. Andritschke, I. Starke and L. Strüder

Synopsis: The performance of an energy-dispersive CCD detector and its first application in a GISAXS experiment are described, and the potential of this kind of detector for future application is discussed.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 458-462  [ doi:10.1107/S0909049508014623 ]

The optimum conditions to collect X-ray data from very small samples

J. A. Cowan and C. Nave

Synopsis: Calculations are presented for the optimum wavelength to collect X-ray diffraction data from a small protein crystal of known dimensions. These calculations are compared with the possible benefits of using a short-pulsed X-ray source.

Online 22 July 2008

    

J. Synchrotron Rad. (2008). 15, 463-468  [ doi:10.1107/S0909049508018293 ]

Classification of Fe-bearing species from K-edge XANES data using two-parameter correlation plots

M. A. Marcus, A. J. Westphal and S. C. Fakra

Synopsis: Methods for classifying Fe-bearing minerals according to features of their Fe K-edge XANES spectra are presented. These spectra are abstracted into two-dimensional plots in which various types of species, such as divalent or trivalent Fe oxides, fall into distinct regions.

Online 19 August 2008

 

J. Synchrotron Rad. (2008). 15, 469-476  [ doi:10.1107/S0909049508019614 ]

Polarization analysis in soft X-ray diffraction to study magnetic and orbital ordering

U. Staub, V. Scagnoli, Y. Bodenthin, M. García-Fernández, R. Wetter, A. M. Mulders, H. Grimmer and M. Horisberger

Synopsis: An experimental approach to the analysis of charge, magnetic and orbital ordering in 3d transition-metal oxides is presented.

Online 19 August 2008

 

J. Synchrotron Rad. (2008). 15, 477-488  [ doi:10.1107/S090904950801755X ]

Synchrotron applications of an amorphous silicon flat-panel detector

J. H. Lee, C. C. Aydiner, J. Almer, J. Bernier, K. W. Chapman, P. J. Chupas, D. Haeffner, K. Kump, P. L. Lee, U. Lienert, A. Miceli and G. Vera

Synopsis: Various characteristics of a flat-panel detector are reported. Examples are given of its applications in a synchrotron light source.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 489-494  [ doi:10.1107/S0909049508016919 ]

A high-temperature furnace for in situ synchrotron X-ray spectroscopy under controlled atmospheric conditions

S. G. Eeckhout, B. Gorges, L. Barthe, O. Pelosi, O. Safonova and G. Giuli

Synopsis: A high-temperature furnace for spectroscopic studies of metals, alloys and other electrically conductive materials under extreme conditions is presented.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 495-505  [ doi:10.1107/S0909049508019602 ]

Diffraction of X-ray free-electron laser femtosecond pulses on single crystals in the Bragg and Laue geometry

V. A. Bushuev

Synopsis: A solution of the problem of dynamical diffraction for X-ray pulses with arbitrary dimensions in the Bragg and Laue cases in a crystal of any thickness and asymmetry coefficient of reflection is presented. Analysis of pulse form and duration transformation in the process of diffraction and propagation in a vacuum is conducted. It is shown that only the symmetrical Bragg case can be used to avoid smearing of reflected pulses.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 506-509  [ doi:10.1107/S0909049508014556 ]

Very first tests on SOLEIL regarding the Zn environment in pathological calcifications made of apatite determined by X-ray absorption spectroscopy

D. Bazin, X. Carpentier, O. Traxer, D. Thiaudière, A. Somogyi, S. Reguer, G. Waychunas, P. Jungers and M. Daudon

Synopsis: A first report of an X-ray absorption spectroscopy experiment at Synchrotron SOLEIL, part of a long-term study dedicated to pathological calcifications, is presented.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 510-513  [ doi:10.1107/S0909049508015173 ]

Structural analysis of sulfur in natural rubber using X-ray absorption near-edge spectroscopy

W. Pattanasiriwisawa, J. Siritapetawee, O. Patarapaiboolchai and W. Klysubun

Synopsis: The opportunity to employ X-ray absorption near-edge spectroscopy techniques to investigate the alteration of the structural properties of sulfur in various vulcanized rubber sheets is presented.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 514-518  [ doi:10.1107/S0909049508017688 ]

On the Einstein model for EXAFS parallel and perpendicular mean-square relative displacements

A. Sanson

Synopsis: The error on the absolute EXAFS mean-square relative displacements owing to the use of the Einstein-fit model has been estimated by means of dynamical simulations.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 519-524  [ doi:10.1107/S0909049508020013 ]

Bond cutting in K-doped tris(8-hydroxyquinoline) aluminium

H.-H. Lee, J. Hwang and T.-W. Pi

Synopsis: Bond-cutting of Alq₃ by the doped K atoms occurs at high K concentration in a K-doped Alq₃ layer.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 525-527  [ doi:10.1107/S0909049508014829 ]

Analyser-based tomography images of cartilage

A. S. Issever, G. Diederichs, S. Majumdar, P. Rogalla, B. K. Hamm, A. Lange, M. Harwardt, M. P. Hentschel and B. R. Mueller

Synopsis: Analyser-based computed tomography has been used to depict substructural variations within articular cartilage.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 528-531  [ doi:10.1107/S0909049508019560 ]

Visualization of age-dependent myocardial metabolic impairment in cardiomyopathic model hamster obtained by fluorescent X-ray computed tomography using I-127 BMIPP

Thet-Thet-Lwin, T. Takeda, J. Wu, Q. Huo, T. Yuasa, K. Hyodo and T. Akatsuka

Synopsis: Fluorescent X-ray computed-tomography imaging with synchrotron radiation to detect the age-dependent metabolic abnormality in cardiomyopathy is reported.

Online 22 July 2008

 

J. Synchrotron Rad. (2008). 15, 532-534  [ doi:10.1107/S0909049508014283 ]

Calibration method at the N K-edge using interstitial nitrogen gas in solid-state nitrogen-containing inorganic compounds

A. W. Gillespie, F. L. Walley, R. E. Farrell, T. Z. Regier and R. I. R. Blyth

Synopsis: Interstitial N₂ gas contained within solid-state inorganic ammonium- and amine-containing salts can be used to quickly and accurately calibrate soft X-ray beamlines at the N K-edge without the need for gas-cell measurements.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 535-537  [ doi:10.1107/S0909049508015951 ]

SaxsMDView: a three-dimensional graphics program for displaying force vectors

M. Kojima, Y. Kezuka, T. Nonaka, Y. Hiragi, T. Watanabe, K. Kimura, K. Takahashi, S. Yanagi and H. Kihara

Synopsis: A new graphics program for the representation of constraint force vectors for small-angle X-ray scattering has been developed.

Online 11 July 2008

 

J. Synchrotron Rad. (2008). 15, 538  [ doi:10.1107/S0909049508026162 ]

PI-MTE cameras now twice as fast with 2 MHz readout

Online 19 August 2008

 

J. Synchrotron Rad. (2008). 15, 539-541  [ doi:10.1107/S0909049508025600 ]

Current events

Online 19 August 2008