Journal of Synchrotron Radiation

Volume 19, Part 6 (November 2012)

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

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

A printed copy of this issue is available for purchase


	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
research papers
beamlines
obituaries
current events
meetings

q2xafs workshop

J. Synchrotron Rad. (2012). 19, 849-850 [ doi:10.1107/S0909049512043506 ]

International Workshop on Improving Data Quality and Quantity for XAFS Experiments (Q2XAFS 2011)

I. Ascone, K. Asakura, G. N. George and S. Wakatsuki

Synopsis: An introductory overview to the special issue papers from the Q2XAFS Workshop in this issue of the journal.

Online 23 October 2012

J. Synchrotron Rad. (2012). 19, 851-862 [ doi:10.1107/S0909049512039544 ]

A step toward standardization: development of accurate measurements of X-ray absorption and fluorescence

C. T. Chantler, Z. Barnea, C. Q. Tran, N. A. Rae and M. D. de Jonge

Synopsis: Background and methodology of improving the accuracy of XAFS measurement, towards data deposition and development of theory.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 863-868 [ doi:10.1107/S090904951203854X ]

XAFS data collection: an integrated approach to delivering good data

S. Diaz-Moreno

Synopsis: A brief review of energy and intensity calibration methods used for X-ray absorption spectroscopy is given.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 869-874 [ doi:10.1107/S0909049512036886 ]

Towards data format standardization for X-ray absorption spectroscopy

B. Ravel, J. R. Hester, V. A. Solé and M. Newville

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 875-886 [ doi:10.1107/S090904951203943X ]

X-ray-induced photo-chemistry and X-ray absorption spectroscopy of biological samples

G. N. George, I. J. Pickering, M. J. Pushie, K. Nienaber, M. J. Hackett, I. Ascone, B. Hedman, K. O. Hodgson, J. B. Aitken, A. Levina, C. Glover and P. A. Lay

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 887-891 [ doi:10.1107/S090904951204023X ]

X-ray absorption spectroscopy at a protein crystallography facility: the Canadian Light Source beamline 08B1-1

J. J. H. Cotelesage, P. Grochulski, I. J. Pickering, G. N. George and M. N. Fodje

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 892-904 [ doi:10.1107/S0909049512041106 ]

IR and X-ray time-resolved simultaneous experiments: an opportunity to investigate the dynamics of complex systems and non-equilibrium phenomena using third-generation synchrotron radiation sources

A. Marcelli, P. Innocenzi, L. Malfatti, M. A. Newton, J. V. Rau, E. Ritter, U. Schade and W. Xu

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 905-910 [ doi:10.1107/S0909049512040162 ]

Design considerations for a new beamline for standard EXAFS at a high-energy low-emittance storage ring

E. Welter

Synopsis: Design considerations are presented for a standard EXAFS beamline at a 6 GeV electron energy, 1 nm rad emittance storage ring.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 911-919 [ doi:10.1107/S0909049512038551 ]

A tool to plan photon-in/photon-out experiments: count rates, dips and self-absorption

M. Bianchini and P. Glatzel

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 920-929 [ doi:10.1107/S0909049512038599 ]

T-REX: new software for advanced QEXAFS data analysis

J. Stötzel, D. Lützenkirchen-Hecht, J.-D. Grunwaldt and R. Frahm

Synopsis: Advances in the analysis of QEXAFS data are discussed and new QEXAFS data analysis software is introduced.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 930-936 [ doi:10.1107/S0909049512040381 ]

Performance and status of beamline BL8 at SLRI for X-ray absorption spectroscopy

W. Klysubun, P. Sombunchoo, W. Deenan and C. Kongmark

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 937-943 [ doi:10.1107/S090904951204109X ]

Time-resolved XAS (Bonn-SUT-SLRI) beamline at SLRI

Y. Poo-arporn, P. Chirawatkul, W. Saengsui, S. Chotiwan, S. Kityakarn, S. Klinkhieo, J. Hormes and P. Songsiriritthigul

Synopsis: 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.

Online 18 October 2012

research papers

J. Synchrotron Rad. (2012). 19, 944-948 [ doi:10.1107/S0909049512034851 ]

Complete polarization analysis of an APPLE II undulator using a soft X-ray polarimeter

H. Wang, P. Bencok, P. Steadman, E. Longhi, J. Zhu and Z. Wang

Synopsis: 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.

Online 1 September 2012

J. Synchrotron Rad. (2012). 19, 949-953 [ doi:10.1107/S090904951203806X ]

A variable ultra-short-pathlength solution cell for XAFS transmission spectroscopy of light elements

J. L. Fulton, M. Balasubramanian, V.-T. Pham and G. S. Deverman

Synopsis: 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.

Online 13 September 2012

J. Synchrotron Rad. (2012). 19, 954-959 [ doi:10.1107/S0909049512033900 ]

Single-exposure dual-energy-subtraction X-ray imaging using a synchrotron source

R. P. Carnibella, A. Fouras and M. J. Kitchen

Synopsis: A single-exposure dual-energy-subtraction X-ray imaging technique, utilizing the harmonic content of a monochromated synchrotron X-ray beam, is presented.

Online 5 September 2012

J. Synchrotron Rad. (2012). 19, 960-968 [ doi:10.1107/S090904951203662X ]

In situ beamline analysis and correction of active optics

J. Sutter, S. Alcock and K. Sawhney

Synopsis: 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.

Online 13 September 2012

J. Synchrotron Rad. (2012). 19, 969-975 [ doi:10.1107/S0909049512038873 ]

QXAFS system of the BL14W1 XAFS beamline at the Shanghai Synchrotron Radiation Facility

H. Liu, Y. Zhou, Z. Jiang, S. Gu, X. Wei, Y. Huang, Y. Zou and H. Xu

Synopsis: 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.

Online 29 September 2012

J. Synchrotron Rad. (2012). 19, 976-987 [ doi:10.1107/S0909049512034486 ]

Accurate dosimetry in scanning transmission X-ray microscopes via the cross-linking threshold dose of poly(methyl methacrylate)

A. F. G. Leontowich, A. P. Hitchcock, T. Tyliszczak, M. Weigand, J. Wang and C. Karunakaran

Synopsis: 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.

Online 6 September 2012

J. Synchrotron Rad. (2012). 19, 988-993 [ doi:10.1107/S0909049512038769 ]

X-ray photon correlation spectroscopy using a fast pixel array detector with a grid mask resolution enhancer

T. Hoshino, M. Kikuchi, D. Murakami, Y. Harada, K. Mitamura, K. Ito, Y. Tanaka, S. Sasaki, M. Takata, H. Jinnai and A. Takahara

Synopsis: The performance of a fast pixel array detector with a grid mask resolution enhancer has been demonstrated for X-ray photon correlation spectroscopy experiments.

Online 28 September 2012

J. Synchrotron Rad. (2012). 19, 994-1000 [ doi:10.1107/S0909049512039118 ]

Accounting for low-frequency synchrotron X-ray beam position fluctuations for dynamic visualizations

J. Hinebaugh, P. R. Challa and A. Bazylak

Synopsis: 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.

Online 18 October 2012

J. Synchrotron Rad. (2012). 19, 1001-1005 [ doi:10.1107/S0909049512035972 ]

Capturing dynamics with Eiger, a fast-framing X-ray detector

I. Johnson, A. Bergamaschi, J. Buitenhuis, R. Dinapoli, D. Greiffenberg, B. Henrich, T. Ikonen, G. Meier, A. Menzel, A. Mozzanica, V. Radicci, D. K. Satapathy, B. Schmitt and X. Shi

Synopsis: A high-frame-rate single-photon-counting pixel detector named Eiger and its suitability for X-ray photon correlation spectroscopy are described.

Online 5 September 2012

J. Synchrotron Rad. (2012). 19, 1006-1011 [ doi:10.1107/S0909049512035571 ]

The point-spread function of fiber-coupled area detectors

J. M. Holton, C. Nielsen and K. A. Frankel

Synopsis: 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.

Online 5 September 2012

J. Synchrotron Rad. (2012). 19, 1012-1014 [ doi:10.1107/S0909049512036618 ]

A proof-of-principle experiment of a novel harmonics separation optics for synchrotron facilities

P. Oberta, J. Hrdý and P. Mikulík

Synopsis: A proof-of-principle experiment of a novel harmonics separation optics for synchrotron facilities is presented.

Online 1 September 2012

J. Synchrotron Rad. (2012). 19, 1015-1020 [ doi:10.1107/S0909049512038186 ]

X-ray beam monitor made by thin-film CVD single-crystal diamond

M. Marinelli, E. Milani, G. Prestopino, C. Verona, G. Verona-Rinati, M. Angelone, M. Pillon, V. Kachkanov, N. Tartoni, M. Benetti, D. Cannatà and F. Di Pietrantonio

Synopsis: 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.

Online 13 September 2012

J. Synchrotron Rad. (2012). 19, 1021-1028 [ doi:10.1107/S0909049512032852 ]

A 30 nm-resolution hard X-ray microscope with X-ray fluorescence mapping capability at BSRF

Q. Yuan, K. Zhang, Y. Hong, W. Huang, K. Gao, Z. Wang, P. Zhu, J. Gelb, A. Tkachuk, B. Hornberger, M. Feser, W. Yun and Z. Wu

Synopsis: 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.

Online 1 September 2012

J. Synchrotron Rad. (2012). 19, 1029-1037 [ doi:10.1107/S0909049512032864 ]

Regridding reconstruction algorithm for real-time tomographic imaging

F. Marone and M. Stampanoni

Synopsis: 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.

Online 1 September 2012

J. Synchrotron Rad. (2012). 19, 1038-1042 [ doi:10.1107/S0909049512033857 ]

Diffraction-enhanced X-ray imaging under low-temperature conditions: non-destructive observations of clathrate gas hydrates

S. Takeya, K. Honda, Y. Gotoh, A. Yoneyama, K. Ueda, A. Miyamoto, T. Hondoh, A. Hori, D. Sun, R. Ohmura, K. Hyodo and T. Takeda

Synopsis: 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.

Online 1 September 2012

J. Synchrotron Rad. (2012). 19, 1043-1049 [ doi:10.1107/S090904951203405X ]

Coupling transmission electron microscopy with synchrotron radiation X-ray fluorescence microscopy to image vascular copper

Z. Qin, B. Lai, J. Landero and J. A. Caruso

Synopsis: 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.

Online 5 September 2012

J. Synchrotron Rad. (2012). 19, 1050-1055 [ doi:10.1107/S0909049512033912 ]

X-ray velocimetry within the ex vivo carotid artery

R. A. Jamison, K. K. W. Siu, S. Dubsky, J. A. Armitage and A. Fouras

Synopsis: 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.

Online 1 September 2012

beamlines

J. Synchrotron Rad. (2012). 19, 1056-1060 [ doi:10.1107/S0909049512036783 ]

A hard X-ray nanoprobe beamline for nanoscale microscopy

R. P. Winarski, M. V. Holt, V. Rose, P. Fuesz, D. Carbaugh, C. Benson, D. Shu, D. Kline, G. B. Stephenson, I. McNulty and J. Maser

Synopsis: 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.

Online 5 September 2012