Journal of Synchrotron Radiation

J. Synchrotron Rad. (2009). 16, 317-324  [ doi:10.1107/S0909049509008899 ]

Analyses of the factors for the demagnetization of permanent magnets caused by high-energy electron irradiation

Y. Asano, T. Bizen and X. Maréchal

Synopsis: The demagnetization of thermally treated Nd₂Fe₁₄B magnets of insertion devices owing to high-energy electron irradiation was analyzed using FLUKA and compared with experimental results.

Online 3 April 2009

J. Synchrotron Rad. (2009). 16, 325-329  [ doi:10.1107/S0909049509003215 ]

Characterization of germanium linear kinoform lenses at Diamond Light Source

L. Alianelli, K. J. S. Sawhney, M. K. Tiwari, I. P. Dolbnya, R. Stevens, D. W. K. Jenkins, I. M. Loader, M. C. Wilson and A. Malik

Synopsis: Silicon and germanium refractive lenses with a kinoform profile have been fabricated by Diamond Light Source and STFC. The first test of a germanium lens providing micrometre hard X-ray focusing is described.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 330-335  [ doi:10.1107/S0909049509002763 ]

MicroGISAXS of Langmuir-Blodgett protein films: effect of temperature on long-range order

E. Pechkova, S. Tripathi and C. Nicolini

Synopsis: The dramatic increase in long-range order in Langmuir-Blodgett multilayered enzyme films after heating and cooling is made apparent by grazing-incidence small-angle X-ray scattering using a microbeam.

Online 3 April 2009

J. Synchrotron Rad. (2009). 16, 336-345  [ doi:10.1107/S0909049509004828 ]

Quality evaluation of quick-frozen biological specimens by simultaneous microbeam SAXS/WAXS recordings

H. Iwamoto

Synopsis: The quality of small-angle X-ray diffraction patterns of quick-frozen hydrated biological specimens has been correlated with the state of the ice as inferred from simultaneously recorded wide-angle scattering. The relation between the diffraction quality and the distance from the surface, and the effect of cryoprotectants is discussed.

Online 18 March 2009

J. Synchrotron Rad. (2009). 16, 346-351  [ doi:10.1107/S090904950900243X ]

A new ultra-high-vacuum variable temperature and high-magnetic-field X-ray magnetic circular dichroism facility at LNLS

J. J. S. Figueiredo, R. Basilio, R. Landers, F. Garcia and A. de Siervo

Synopsis: This paper describes a new apparatus for X-ray magnetic circular dichroism measurement that can be easily installed at different X-ray and UV beamlines at the Brazilian Synchrotron Light Laboratory.

Online 17 March 2009

J. Synchrotron Rad. (2009). 16, 352-357  [ doi:10.1107/S090904950900675X ]

X-ray diffractometry for the structure determination of a submicrometre single powder grain

N. Yasuda, H. Murayama, Y. Fukuyama, J. E. Kim, S. Kimura, K. Toriumi, Y. Tanaka, Y. Moritomo, Y. Kuroiwa, K. Kato, H. Tanaka and M. Takata

Synopsis: A high-precision diffractometer with a synchrotron radiation microfocusing technique has been developed to investigate the crystal structure of a submicrometre-scale single grain of powder sample. The structure of a BaTiO₃ single powder grain, of dimensions 600 × 600 × 300 nm, was determined.

Online 1 April 2009

J. Synchrotron Rad. (2009). 16, 358-367  [ doi:10.1107/S0909049509003720 ]

Development of new apertures for coherent X-ray experiments

E. M. Dufresne, S. B. Dierker, Z. Yin and L. Berman

Synopsis: New slits have been designed which use an apodization technique to reduce the parasitic background caused by the Fraunhofer diffraction pattern of the aperture in a coherent SAXS experiment.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 368-375  [ doi:10.1107/S0909049509009911 ]

Performance of single-photon-counting PILATUS detector modules

P. Kraft, A. Bergamaschi, Ch. Broennimann, R. Dinapoli, E. F. Eikenberry, B. Henrich, I. Johnson, A. Mozzanica, C. M. Schlepütz, P. R. Willmott and B. Schmitt

Synopsis: Characterization of PILATUS single-photon-counting X-ray detector modules regarding charge sharing, energy resolution and rate capability is presented. The performance of the detector was tested with surface diffraction experiments at the synchrotron.

Online 7 April 2009

J. Synchrotron Rad. (2009). 16, 376-379  [ doi:10.1107/S0909049509007134 ]

Development of micro-XANES mapping in the diamond anvil cell

G. Aquilanti, S. Pascarelli, O. Mathon, M. Muñoz, O. Narygina and L. Dubrovinsky

Synopsis: A novel method for two-dimensional micro-XAS mapping in transmission mode through a diamond anvil cell developed at the energy-dispersive EXAFS beamline of the ESRF is presented.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 380-386  [ doi:10.1107/S0909049509009479 ]

Universal function for the brilliance of undulator radiation considering the energy spread effect

T. Tanaka and H. Kitamura

Synopsis: A simple expression has been analytically derived as a universal function to evaluate the brilliance of undulator radiation considering the effects of the finite emittance and energy spread of the electron beam.

Online 27 March 2009

J. Synchrotron Rad. (2009). 16, 387-390  [ doi:10.1107/S0909049509004658 ]

Picosecond time-resolved laser pump/X-ray probe experiments using a gated single-photon-counting area detector

T. Ejdrup, H. T. Lemke, K. Haldrup, T. N. Nielsen, D. A. Arms, D. A. Walko, A. Miceli, E. C. Landahl, E. M. Dufresne and M. M. Nielsen

Synopsis: The use of a gated PILATUS detector for picosecond time-resolved X-ray diffraction experiments is demonstrated.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 391-394  [ doi:10.1107/S0909049509005986 ]

100 ps time-resolved solution scattering utilizing a wide-bandwidth X-ray beam from multilayer optics

K. Ichiyanagi, T. Sato, S. Nozawa, K. H. Kim, J. H. Lee, J. Choi, A. Tomita, H. Ichikawa, S. Adachi, H. Ihee and S. Koshihara

Synopsis: A new method of time-resolved solution scattering utilizing X-ray multilayer optics is presented.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 395-397  [ doi:10.1107/S0909049509007225 ]

Simple dose rate measurements for a very high synchrotron X-ray flux

C.-J. Liu, C.-H. Wang, C.-L. Wang, Y. Hwu, C.-Y. Lin and G. Margaritondo

Synopsis: Dosimetry based on methylene blue bleaching gives unsaturated measurements of very high flux X-rays.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 398-404  [ doi:10.1107/S090904950900449X ]

Evaluation of enamel crystallites in subsurface lesion by microbeam X-ray diffraction

N. Yagi, N. Ohta, T. Matsuo, T. Tanaka, Y. Terada, H. Kamasaka, K. To-o, T. Kometani and T. Kuriki

Synopsis: An early caries lesion in tooth enamel was studied by microbeam X-ray diffraction.

Online 17 March 2009

J. Synchrotron Rad. (2009). 16, 405-412  [ doi:10.1107/S0909049509009807 ]

Origin of the X-ray magnetic circular dichroism at the L-edges of the rare-earths in R_xR_1-x'Al₂ systems

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

Synopsis: An X-ray magnetic circular dichroism study performed at the rare-earth L_2,3-edges in the R_xR_1-x'Al₂ compounds is presented, showing that both R and R' atoms contribute to the XMCD recorded at the L-edges of the selected rare-earth, either R or R'.

Online 1 April 2009

J. Synchrotron Rad. (2009). 16, 413-421  [ doi:10.1107/S0909049509010425 ]

Biological X-ray absorption spectroscopy and metalloproteomics

I. Ascone and R. Strange

Synopsis: An updated overview of the progress of BioXAS and metalloproteomics that has emerged from recent meetings.

Online 1 April 2009

J. Synchrotron Rad. (2009). 16, 422-427  [ doi:10.1107/S0909049509010024 ]

Characterizing arsenic in preserved hair for assessing exposure potential and discriminating poisoning

I. M. Kempson, D. Henry and J. Francis

Synopsis: Arsenic applied in the preservation of taxidermy specimens was shown with imaging X-ray fluorescence to penetrate the hair. This complicates efforts to identify endogenous arsenic in poisoning cases, but reduces potential exposure when handling specimens.

Online 27 March 2009

J. Synchrotron Rad. (2009). 16, 428-431  [ doi:10.1107/S0909049509007493 ]

An XANES study on the modification of single-walled carbon nanotubes by nitric acid

X. Liang, J. Zhong, Y. Wang, T. Zhao, P. Yao, W. Chu, K. Ibrahim, H. Qian and Z. Wu

Synopsis: Single-walled carbon nanotubes (SWCNTs) treated by nitric acid are investigated, giving evidence of the oxidation on both the carbonaceous fragments and the side walls of SWCNTs. It is also shown that washing with sodium hydroxide removes carboxylated carbonaceous fragments and a further acid treatment will directly modify the tube walls of SWCNTs.

Online 20 March 2009

J. Synchrotron Rad. (2009). 16, 432-434  [ doi:10.1107/S0909049509001939 ]

Synchrotron-based radioscopy employing spatio-temporal micro-resolution for studying fast phenomena in liquid metal foams

A. Rack, F. García-Moreno, T. Baumbach and J. Banhart

Synopsis: High-speed synchrotron-based radioscopy is applied to study a coalescence event (which lasts 2 ms) in situ in a liquid metal foam.

Online 18 March 2009

J. Synchrotron Rad. (2009). 16, 435-436  [ doi:10.1107/S090904950900212X ]

Comments on Migration of mercury from dental amalgam through human teeth by H. H. Harris et al. (2008). J. Synchrotron Rad. 15, 123-128

G. Guzzi and P. D. Pigatto

Synopsis: Comments on Harris et al. [J. Synchrotron Rad. (2008). 15, 123-128].

Online 17 March 2009

J. Synchrotron Rad. (2009). 16, 437-438  [ doi:10.1107/S0909049509005706 ]

Response to Guzzi & Pigatto's Comments on Migration of mercury from dental amalgam through human teeth by H. H. Harris et al. (2008). J. Synchrotron Rad. 15, 123-128

H. H. Harris, S. Vogt and P. A. Lay

Synopsis: Response to Guzzi & Pigatto's comments in the previous paper.

Online 17 March 2009

J. Synchrotron Rad. (2009). 16, 439  [ doi:10.1107/S0909049509007328 ]

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

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

Synopsis: An erratum to the paper by Marcus et al. [(2008), J. Synchrotron Rad. 15, 463-468].

Online 16 April 2009

J. Synchrotron Rad. (2009). 16, 440-441  [ doi:10.1107/S0909049509013910 ]

Current events

Online 16 April 2009