J. Synchrotron Rad. (2008). 15, 543-548
[ doi:10.1107/S0909049508027374 ]

Study of micro-channel geometries for internally cooled Si monochromators

P. Oberta, V. Ác, J. Hrdý and B. Lukás

Synopsis: Novel internally water-cooled Si monochromators are described which reduce rocking-curve enlargement owing to fabrication to less than 2.5 µrad.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 549-557
[ doi:10.1107/S0909049508023856 ]

A novel multi-detection technique for three-dimensional reciprocal-space mapping in grazing-incidence X-ray diffraction

M. Schmidbauer, P. Schäfer, S. Besedin, D. Grigoriev, R. Köhler and M. Hanke

Synopsis: A new scattering technique in grazing-incidence X-ray diffraction geometry is described which enables three-dimensional mapping of reciprocal space by a single rocking scan of the sample.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 558-571
[ doi:10.1107/S0909049508023935 ]

Image contrast in X-ray reflection interface microscopy: comparison of data with model calculations and simulations

P. Fenter, C. Park, V. Kohli and Z. Zhang

Synopsis: The mechanism of image contrast in imaging molecular-scale features on solid surfaces is described for X-ray reflection interface microscopy through comparison of experimental images with model calculations and simulated measurements.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 572-575
[ doi:10.1107/S0909049508026484 ]

Influence of crystallographic orientation of biogenic calcite on in situ Mg XANES analyses

A. Pérez-Huerta, M. Cusack, M. Janousch and A. A. Finch

Synopsis: The importance of crystallography for XAS analyses and, therefore, the necessity to obtain crystallographic information at high spatial resolution prior to spectroscopic analysis is demonstrated.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 576-583
[ doi:10.1107/S0909049508029439 ]

Coherent X-ray diffractive imaging of protein crystals

S. Boutet and I. K. Robinson

Synopsis: Single crystals of the protein ferritin are imaged using coherent X-ray diffraction imaging and the results show the presence of inward surface strain.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 584-592
[ doi:10.1107/S090904950802801X ]

Obtaining local reciprocal lattice vectors from finite-element analysis

J. P. Sutter, T. Connolley, T. P. Hill, H. Huang, D. W. Sharp and M. Drakopoulos

Synopsis: This report presents a simple procedure for extracting local reciprocal lattice vectors from the displacements calculated within a crystal under bending or thermal load by the widely used ANSYS^® Workbench™ finite-element software.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 593-599
[ doi:10.1107/S0909049508024151 ]

Powder diffraction from a continuous microjet of submicrometer protein crystals

D. A. Shapiro, H. N. Chapman, D. DePonte, R. B. Doak, P. Fromme, G. Hembree, M. Hunter, S. Marchesini, K. Schmidt, J. Spence, D. Starodub and U. Weierstall

Synopsis: Protein powder diffraction data can be obtained from submicrometer crystals of the membrane protein photosystem 1 using a flow-focusing liquid microjet for sample delivery.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 600-605
[ doi:10.1107/S0909049508026745 ]

An access to buried interfaces: the X-ray reflectivity set-up of BL9 at DELTA

M. Paulus, D. Lietz, C. Sternemann, K. Shokuie, F. Evers, M. Tolan, C. Czeslik and R. Winter

Synopsis: The high-energy X-ray reflectivity set-up of BL9 at DELTA is presented together with measurements which show the capabilities of the set-up.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 606-611
[ doi:10.1107/S0909049508029762 ]

Diffraction of partially coherent X-rays in clessidra prism arrays

L. De Caro, W. Jark, R. H. Menk and M. Matteucci

Synopsis: Diffraction of partially coherent X-ray waves from clessidra (hourglass) lenses has been theoretically described. The good agreement between theory and experimental data leads to an insight into the operation of clessidra lenses.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 612-617
[ doi:10.1107/S0909049508022358 ]

Empirical dead-time corrections for synchrotron sources

D. A. Walko, D. A. Arms and E. C. Landahl

Synopsis: Dead-time corrections are presented for different operating modes of a synchrotron. Detector speed and synchrotron fill pattern are critical for determining appropriate dead-time corrections.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 618-623
[ doi:10.1107/S0909049508023248 ]

Precise determination of elastic constants by high-resolution inelastic X-ray scattering

H. Fukui, T. Katsura, T. Kuribayashi, T. Matsuzaki, A. Yoneda, E. Ito, Y. Kudoh, S. Tsutsui and A. Q. R. Baron

Synopsis: By performing inelastic X-ray scattering experiments using a 12-analyzer array, the complete set of single-crystal elastic constants of MgO were determined to a precision better than 0.8% (sound velocities to better than 0.2%).

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 624-631
[ doi:10.1107/S090904950802387X ]

Inner-shell chemical shift of DNA/RNA bases and inheritance from their parent purine and pyrimidine

F. Wang, Q. Zhu and E. Ivanova

Synopsis: The main red shift of N1s and C1s core ionization spectra of the purine bases is found with respect to the unsubstituted purine, and is different from the dominated blue shift in the pyrimidine counterparts. The atomic-site-dependent energy-level crossings of the core ionization spectral peaks in adenine, guanine and unsubstituted purine are detailed.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 632-640
[ doi:10.1107/S0909049508023327 ]

Implementation of a combined SAXS/WAXS/QEXAFS set-up for time-resolved in situ experiments

S. Nikitenko, A. M. Beale, A. M. J. van der Eerden, S. D. M. Jacques, O. Leynaud, M. G. O'Brien, D. Detollenaere, R. Kaptein, B. M. Weckhuysen and W. Bras

Synopsis: A set-up has recently been developed that combines three X-ray-based techniques, small- and wide-angle X-ray scattering (SAXS/WAXS) and quick-scanning EXAFS (QEXAFS), for the study of dynamical chemical processes.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 641-647
[ doi:10.1107/S0909049508026435 ]

EXAFS study of local atomic order about iodine in thyroxine, rat, human and sheep thyroids

B. R. Orton and R. Bilsborrow

Synopsis: A satisfactory model was found for EXAFS from iodine in thyroxine; this model was augmented to include quasi-covalent bonding from iodine to carbonyl ligands for rat, human and sheep thyroids. These models will be helpful in estimates of radiation dose to thyroids from Auger electrons emitted by radioactive iodine.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 648-654
[ doi:10.1107/S0909049508025685 ]

Evaluation of the improved three-dimensional resolution of a synchrotron radiation computed tomograph using a micro-fabricated test pattern

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

Synopsis: The spatial resolution of a synchrotron radiation computed tomograph was examined using a micro-fabricated test pattern.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 655-659
[ doi:10.1107/S0909049508023959 ]

IKNO, a user facility for coherent terahertz and UV synchrotron radiation

F. Sannibale, A. Marcelli and P. Innocenzi

Synopsis: IKNO, a proposal for a multi-user synchrotron radiation source optimized for the generation of coherent synchrotron radiation in the terahertz frequency range, with many orders of magnitude higher photon flux than in existing sources, is presented. Additionally, the incoherent radiation spectrum of IKNO extends up to the VUV frequencies with flux comparable with that of a third-generation synchrotron light source.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 660-662
[ doi:10.1107/S0909049508025363 ]

A coherent synchrotron X-ray microradiology investigation of bubble and droplet coalescence

B. M. Weon, J. H. Je, Y. Hwu and G. Margaritondo

Synopsis: Microradiology with coherent X-rays is shown to be very effective in revealing interfaces in multiphase systems and in particular gas bubbles. Its use has been tested in the study of bubble colescence validating the results with a simple theoretical analysis based on mass conservation.

Online 3 October 2008

 

J. Synchrotron Rad. (2008). 15, 663-665
[ doi:10.1107/S0909049508032755 ]

Current events

Online 13 October 2008