issue contents

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775

September 2018 issue

Highlighted illustration

Cover illustration: High-temperature measurement of the phonon density of states of a mineral by nuclear resonant inelastic X-ray scattering at sector 3ID of the Advanced Photon Source, Argonne National Laboratory (see Dauphas, Hu, Baker, Hu, Tissot, Alp, Roskosz, Zhao, Bi, Liu, Lin, Nie and Heard, pages 1581-1599). Photo credit: F. Tissot.

facility information


feature articles



link to html
Commissioning and first-year operational results of the MAX IV 3 GeV electron storage ring, the first synchrotron light source to make use of the multibend-achromat lattice to achieve ultralow emittance and high brightness, are presented.

research papers


link to html
Switching of the harmonic order in free-electron laser oscillations by adjusting the dispersive gap of the optical klystron is demonstrated.

link to html
The compatibility of sub-picosecond-long photon pulse production with multi-bunch, multi-user operation of synchrotron light sources, and in particular with diffraction limit electron optics designs in the next storage rings generation, is investigated. An alternative method for the time-compression of electron bunches, which is transparent to storage rings operation, is illustrated.

link to html
The advent of `diffraction-limited' storage rings with ultralow emittance poses a question on possible limitations to the (spectral) brightness and coherence due to the electron beam energy spread. This is studied here using semi-analytical techniques.

link to html
The sagittal-bent Laue crystal profile is characterized by optical metrology and synchrotron X-ray experiments. On-line X-ray experiments provide a quick feedback on the crystal-profile adjustment.

link to html
A coherence-preserving harmonic-rejection scheme based on parallel crystal optics that achieves a total flux ratio of harmonic radiation to fundamental radiation on the order of 10−10 or lower is reported.

link to html
The design and first measurements with a high-speed piezo-positioner-based goniometer for raster-scanning serial macromolecular micro-focus crystallography at synchrotron storage rings are presented.

link to html
The capabilities of the new long duration experiment facility at Diamond Light Source are demonstrated through a study of phase evolution in Cr–Co–Ni alloys using in situ X-ray diffraction.

link to html
A protocol is proposed for classifying structure models of proteins restored by ab initio analyses in small-angle X-ray scattering.

link to html
High temporally and spatially resolved operando studies of CO oxidation using a Pd(100) single-crystal surface as a model catalyst are presented. The surface structure is determined simultaneously as the gas phase is visualized in two dimensions in the vicinity of the catalyst surface.

link to html
An alternative defect engineering approach has been developed that is based on the effects of radiation damage caused by synchrotron X-ray irradiation.

link to html
The induced magnetic moment at Mo atoms in CoMo alloy (reference) and Co/Mo layered systems is investigated by X-ray magnetic circular dichroism. A possible role of this moment in antiparallel coupling of the Co layers' magnetization in the Co/Mo system is discussed.

link to html
Sub-microsecond-resolved multispeckle XPCS spanning nearly eight orders of magnitude in delay times is demonstrated using the UFXC32k area detector in a combination of burst and continuous data acquisition modes.

link to html
Pd/Y multilayers with B4C barrier layers are characterized using grazing-incident X-ray reflectometry and X-ray standing wave enhanced hard X-ray photoelectron spectroscopy.

link to html
The development and commissioning of an experimental set-up for studying photophysics and photochemistry of molecules in matrix isolation and the ice phase at low temperatures at the Photophysics beamline, Indus-1, Indian synchrotron radiation source, are reported.

link to html
A new procedure has been developed that determines the complex refractive index of a material in the soft X-ray regime by consistently considering simultaneous measurements of electron yield and reflectance. Demonstrating the efficacy of this procedure in its application to graphite, optical constants have been determined for linearly polarized light incident with p- and s-geometry.

link to html
A scanning soft X-ray microscope for magnetic imaging using an 8 T superconducting magnet, installed at BL25SU, SPring-8, is described. With the instrument the magnetic domain structure of an Nd–Fe–B sintered magnet is demonstrated.

link to html
A novel iterative image reconstruction algorithm for in-line X-ray phase-contrast computed tomography (IL-PCCT) is presented, which has the potential to reduce the radiation dose while maintaining the high quality of reconstructed images in IL-PCCT.

link to html
This proof-of-concept study demonstrates that in-line propagation-based phase-contrast computed tomography of fresh tissues and complete breast specimens can be performed. High-quality images can be obtained using an X-ray dose low enough to allow for a future application in patients, while providing a more accurate characterization of the clinical picture.

link to html
The high-speed synchrotron X-ray imaging technique was synchronized with a custom-built laser-melting setup to capture the dynamics of laser powder-bed fusion processes in situ. Various significant phenomena, including vapor-depression and melt-pool dynamics and powder-spatter ejection, were captured with high spatial and temporal resolution.

link to html
An approach is demonstrated termed Tomosaic for tomographic imaging of large samples that extend beyond the illumination field of view of an X-ray imaging system.

link to html
The fluence and dose requirements as well as the expected contrast are calculated for X-ray imaging of selected cellular components as a function of photon energy. It is found that a much higher dose is required for phase contrast imaging compared with absorption contrast imaging in the water window.

short communications


link to html
A setup for time-resolved in situ tomography with up to 25 tomograms s−1 is implemented at the EDDI beamline, BESSY II, Germany. The capabilities of the methods are demonstrated by analysing the foaming behaviour of a metallic foam granulate.

link to html
A successful test of an on-chip THz spectrometer that allows measurement of THz fingerprints for the purpose of bunch compression diagnostics is reported.

link to html
Refractive lenses are used to vary the focal spot size for a Kirkpatrick–Baez X-ray microprobe.

beamlines


link to html
In order to probe the complex dynamics of light–matter interaction on all relevant time scales, a multilayer-mirror-based long-range split-and-delay unit was installed as a part of the CAMP end-station at the FLASH free-electron laser in Hamburg.

link to html
Beamline BL1 at the FLASH free-electron laser facility at DESY was upgraded with new transport and focusing optics for the installation of the new permanent CAMP end-station, a multi-purpose instrument optimized for electron- and ion-spectroscopy, imaging and pump–probe experiments. An overview of the layout, beam transport, focusing capabilities, and experimental possibilities of this new end-station, as well as results from its commissioning and first experiments, are presented.

link to html
The HAXPES beamline PES-BL14 installed at the bending-magnet port at the Indian synchrotron, Indus-2, is presented.

link to html
The design objectives and operational challenges of a wide-beam and high-power-load, in-vacuum, DCLM monochromator are described.

link to html
A scanning four-bounce monochromator that offers an unprecedented level of stability in the incident beam energy resolution and calibration has been developed for a flagship spectroscopy beamline at Diamond Light Source.

link to html
A new large-range rapid-scan X-ray fluorescence (XRF) imaging station at the Stanford Synchrotron Radiation Lightsource is described. This station uses a continuous rapid-scan system with a scan range of 1000 × 600 mm and a load capacity of up to 25 kg, capable of 25–100 µm precision for elemental XRF mapping and X-ray absorption spectroscopy of a wide range of objects.

computer programs


link to html
A description of the Data Management System developed at the Advanced Photon Source is given.

link to html
SciPhon is a software for the reduction of nuclear resonant inelastic X-ray scattering data. Tests and examples of applications to Fe, Kr, Sn, Eu and Dy data are presented.

link to html
The CTM4XAS software package is extended to simulate the M- and L-edge X-ray absorption spectra of metal-centered excited states of first-row transition metals. The new capabilities of the method are demonstrated by re-interpreting two previous experimental studies.

book reviews


Follow J. Synchrotron Rad.
Sign up for e-alerts
Follow J. Synchrotron Rad. on Twitter
Follow us on facebook
Sign up for RSS feeds