issue contents

Journal logoJOURNAL OF
ISSN: 1600-5775

November 2012 issue

International Workshop on Improving Data Quality and Quantity for XAFS Experiments (Q2XAFS2011)

Photon Factory, Tsukuba, Japan, 8-9 December 2011

Highlighted illustration

Cover illustration: The X-ray absorption near-edge region of the thiol protease papain from papaya (see George, Pickering, Pushie, Nienaber, Hackett, Ascone, Hedman, Hodgson, Aitken, Levina, Glover and Lay, pages 875-886).

facility information

q2xafs workshop

J. Synchrotron Rad. (2012). 19, 849-850
doi: 10.1107/S0909049512043506
link to html
An introductory overview to the special issue papers from the Q2XAFS Workshop in this issue of the journal.

J. Synchrotron Rad. (2012). 19, 851-862
doi: 10.1107/S0909049512039544
link to html
Background and methodology of improving the accuracy of XAFS measurement, towards data deposition and development of theory.

J. Synchrotron Rad. (2012). 19, 863-868
doi: 10.1107/S090904951203854X
link to html
A brief review of energy and intensity calibration methods used for X-ray absorption spectroscopy is given.

J. Synchrotron Rad. (2012). 19, 869-874
doi: 10.1107/S0909049512036886
link to html
In this first report from an ad hoc working group on XAS data format standardization, concepts for addressing three XAS data storage needs are presented: a single spectrum interchange format, a hierarchical format for multispectral X-ray experiment, and a relational database format for XAS data libraries.

J. Synchrotron Rad. (2012). 19, 875-886
doi: 10.1107/S090904951203943X
link to html
X-ray-induced photo-chemistry of metal sites within biological molecules is a concern for X-ray absorption spectroscopy, X-ray crystallography and other techniques in which samples are illuminated with X-rays. The effects of X-ray-induced photo-chemistry are reviewed and the methods used to mitigate these in X-ray absorption spectroscopy are outlined.

J. Synchrotron Rad. (2012). 19, 887-891
doi: 10.1107/S090904951204023X
link to html
The Canadian Macromolecular Crystallography Facility beamline 08B1-1 at the Canadian Light Source has added the capability to perform X-ray absorption spectroscopy on crystal samples.

J. Synchrotron Rad. (2012). 19, 892-904
doi: 10.1107/S0909049512041106
link to html
Scientific cases from original works and literature reviews of great interest for both fundamental research and technological applications are presented to support the advantage of complementary information provided by an IR/X-ray simultaneous approach with both probes exploiting synchrotron radiation sources.

J. Synchrotron Rad. (2012). 19, 905-910
doi: 10.1107/S0909049512040162
link to html
Design considerations are presented for a standard EXAFS beamline at a 6 GeV electron energy, 1 nm rad emittance storage ring.

J. Synchrotron Rad. (2012). 19, 911-919
doi: 10.1107/S0909049512038551
link to html
A program is presented to plan photon-in/photon-out experiments including fluorescence-detected X-ray absorption and X-ray emission spectroscopy. Range-extended XAFS, self-absorption and pump-and-probe experiments are discussed.

J. Synchrotron Rad. (2012). 19, 920-929
doi: 10.1107/S0909049512038599
link to html
Advances in the analysis of QEXAFS data are discussed and new QEXAFS data analysis software is introduced.

J. Synchrotron Rad. (2012). 19, 930-936
doi: 10.1107/S0909049512040381
link to html
Detailed information is provided regarding the performance and status of beamline BL8 at the Synchrotron Light Research Institute (Thailand) for X-ray absorption spectroscopy in the photon energy range 1.25–10 keV.

J. Synchrotron Rad. (2012). 19, 937-943
doi: 10.1107/S090904951204109X
link to html
In this article the time-resolved X-ray absorption spectroscopy beamline at the Synchrotron Light Research Institute, Thailand, is described. The description includes an energy-dispersive set-up employed by the beamline and a result from XAS measurements during a thermal treatment in the production of TiO2.

research papers

J. Synchrotron Rad. (2012). 19, 944-948
doi: 10.1107/S0909049512034851
link to html
The complete polarization analysis for both the linear arbitrary polarization and the various ellipticities of an APPLE II undulator using a multilayer-based soft X-ray polarimeter is shown.

J. Synchrotron Rad. (2012). 19, 949-953
doi: 10.1107/S090904951203806X
link to html
An X-ray absorption fine-structure spectroscopy cell that is suitable for solution-phase studies of the light elements in the series from Na+ and Ca2+ is described.

J. Synchrotron Rad. (2012). 19, 954-959
doi: 10.1107/S0909049512033900
link to html
A single-exposure dual-energy-subtraction X-ray imaging technique, utilizing the harmonic content of a monochromated synchrotron X-ray beam, is presented.

J. Synchrotron Rad. (2012). 19, 960-968
doi: 10.1107/S090904951203662X
link to html
The pencil-beam method is used to measure and correct long-wavelength slope errors on both bimorph and mechanical X-ray mirrors under beamline conditions.

J. Synchrotron Rad. (2012). 19, 969-975
doi: 10.1107/S0909049512038873
link to html
A quick-scanning XAFS system, based on EPICS and LabVIEW, was developed at beamline BL14W1 at the Shanghai Synchrotron Radiation Facility. This paper described the whole system, including the equipment implemented on the beamline and the factors related to its performance. The signal-to-noise ratio was studied under different experimental situations.

J. Synchrotron Rad. (2012). 19, 976-987
doi: 10.1107/S0909049512034486
link to html
The critical dose for chemical modification and the onset of negative mode (cross-linking) dose of PMMA were measured for 300 eV soft X-ray exposure. A method to determine detector efficiency was developed based on the onset of negative mode dose.

J. Synchrotron Rad. (2012). 19, 988-993
doi: 10.1107/S0909049512038769
link to html
The performance of a fast pixel array detector with a grid mask resolution enhancer has been demonstrated for X-ray photon correlation spectroscopy experiments.

J. Synchrotron Rad. (2012). 19, 994-1000
doi: 10.1107/S0909049512039118
link to html
Dynamic sample behaviour is characterized with a time series of normalized X-ray radiographs. Vertical beam fluctuations, likely caused by thermal effects of the incident beam on the monochromator, are tracked and accounted for with a novel technique.

J. Synchrotron Rad. (2012). 19, 1001-1005
doi: 10.1107/S0909049512035972
link to html
A high-frame-rate single-photon-counting pixel detector named Eiger and its suitability for X-ray photon correlation spectroscopy are described.

J. Synchrotron Rad. (2012). 19, 1006-1011
doi: 10.1107/S0909049512035571
link to html
The point-spread function (PSF) of a powdered-phosphor fiber-optic taper-coupled CCD area detector was measured, and an analytic expression for its functional form proposed. The `tails' of this PSF were shown to be due almost entirely to the fiber-optic taper, with no contribution from the phosphor itself.

J. Synchrotron Rad. (2012). 19, 1012-1014
doi: 10.1107/S0909049512036618
link to html
A proof-of-principle experiment of a novel harmonics separation optics for synchrotron facilities is presented.

J. Synchrotron Rad. (2012). 19, 1015-1020
doi: 10.1107/S0909049512038186
link to html
A novel X-ray beam intensity and position monitor based on a thin film of single-crystal diamond Schottky diode for synchrotron radiation applications has been fabricated and tested.

J. Synchrotron Rad. (2012). 19, 1021-1028
doi: 10.1107/S0909049512032852
link to html
The successful design and performance of a transmission X-ray microscope with X-ray fluorescence mapping capability at a first-generation synchrotron light source is described.

J. Synchrotron Rad. (2012). 19, 1029-1037
doi: 10.1107/S0909049512032864
link to html
A fast algorithm for tomographic reconstruction based on the Fourier method is presented. On CPU, it provides an up to 20-fold performance increase compared with filtered back-projection routines with negligible accuracy degradation.

J. Synchrotron Rad. (2012). 19, 1038-1042
doi: 10.1107/S0909049512033857
link to html
A cryogenic imaging technique has been developed for DEI-enabled measurements at low temperature from 193 K up to room temperature with a deviation of 1 K, which may be a way to make temperature-dependent measurements of physical properties such as density.

J. Synchrotron Rad. (2012). 19, 1043-1049
doi: 10.1107/S090904951203405X
link to html
In this study it is demonstrated that coupling transmission electron microscopy with synchrotron radiation X-ray fluorescence microscopy can provide new information about copper topography in 1 µm-thick sections from human THP-1 cells and mouse aorta.

J. Synchrotron Rad. (2012). 19, 1050-1055
doi: 10.1107/S0909049512033912
link to html
X-ray velocimetry is utilised to measure the velocity of whole blood, seeded with a clinically used ultrasound contrast agent, within live carotid arterial tissue from a rat.


J. Synchrotron Rad. (2012). 19, 1056-1060
doi: 10.1107/S0909049512036783
link to html
The Hard X-ray Nanoprobe Beamline is a precision platform for scanning probe and full-field microscopy with 3–30 keV X-rays. A combination of high-stability X-ray optics and precision motion sensing and control enables detailed studies of the internal features of samples with resolutions approaching 30 nm.


J. Synchrotron Rad. (2012). 19, 1061-1063
doi: 10.1107/S0909049512043129
link to html
Obituary for Dame Louise Napier Johnson.

current events

J. Synchrotron Rad. (2012). 19, 1064-1065
doi: 10.1107/S0909049512042987
Follow J. Synchrotron Rad.
Sign up for e-alerts
Follow J. Synchrotron Rad. on Twitter
Follow us on facebook
Sign up for RSS feeds