X-ray photon correlation spectroscopy using the Mythen 1D detector

Westermeier, Fabian; Zozulya, Alexey; Бондаренко, С. В.; Parenti, A.; Lohmann, Michael; Schavkan, Alexander; Grübel, G.; Sprung, Michael

doi:10.1088/1742-6596/425/20/202005

Cited by 5 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…XPCS has so far been largely limited to relatively slow glassy relaxation processes, with characteristic time scales ranging from tens of milliseconds to minutes and hours. In part this is due to relatively low average coherent flux provided by the third-generation synchrotron sources, and in part due to limitations of area X-ray detector technology, which often results in relatively slow readout times, somewhat remedied by recent advances in detector technology and data compression schemes (Becker & Graafsma, 2012a,b;Hansen et al, 2010;Hoshino et al, 2012;Hromalik et al, 2012;Johnson et al, 2012;Lumma et al, 2000;Madden et al, 2010Madden et al, , 2011Shinohara et al, 2010;Westermeier et al, 2009Westermeier et al, , 2013. The two-dimensional detector limitations can be circumvented by using a point (0D) detector.…”

Section: Outlook: Xpcs At Diffraction-limited Storage Ringsmentioning

confidence: 99%

X-ray photon correlation spectroscopy

2014

View full text Add to dashboard Cite

In recent years, X-ray photon correlation spectroscopy (XPCS) has emerged as one of the key probes of slow nanoscale fluctuations, applicable to a wide range of condensed matter and materials systems. This article briefly reviews the basic principles of XPCS as well as some of its recent applications, and discusses some novel approaches to XPCS analysis. It concludes with a discussion of the future impact of diffraction-limited storage rings on new types of XPCS experiments, pushing the temporal resolution to nanosecond and possibly even picosecond time scales.

show abstract

Section: Outlook: Xpcs At Diffraction-limited Storage Ringsmentioning

confidence: 99%

X-ray photon correlation spectroscopy

2014

View full text Add to dashboard Cite

show abstract

“…Fast non-imaging and linear detectors can be used for XPCS experiments, e.g. 1D Mythen devices (Westermeier et al, 2013). However, they introduce substantial constraints on the phenomena that can be studied, require relatively long illumination leading to radiation damage of materials under investigation, and are difficult to use when the alignment to a specific speckle becomes problematic.…”

Section: Introductionmentioning

confidence: 99%

Photon-counting MCP/Timepix detectors for soft X-ray imaging and spectroscopic applications

Tremsin¹,

Vallerga²,

Siegmund³

et al. 2021

J Synchrotron Radiat

View full text Add to dashboard Cite

Detectors with microchannel plates (MCPs) provide unique capabilities to detect single photons with high spatial (<10 µm) and timing (<25 ps) resolution. Although this detection technology was originally developed for applications with low event rates, recent progress in readout electronics has enabled their operation at substantially higher rates by simultaneous detection of multiple particles. In this study, the potential use of MCP detectors with Timepix readout for soft X-ray imaging and spectroscopic applications where the position and time of each photon needs to be recorded is investigated. The proof-of-principle experiments conducted at the Advanced Light Source demonstrate the capabilities of MCP/Timepix detectors to operate at relatively high input counting rates, paving the way for the application of these detectors in resonance inelastic X-ray scattering and X-ray photon correlation spectroscopy (XPCS) applications. Local count rate saturation was investigated for the MCP/Timepix detector, which requires optimization of acquisition parameters for a specific scattering pattern. A single photon cluster analysis algorithm was developed to eliminate the charge spreading effects in the detector and increase the spatial resolution to subpixel values. Results of these experiments will guide the ongoing development of future MCP devices optimized for soft X-ray photon-counting applications, which should enable XPCS dynamics measurements down to sub-microsecond timescales.

show abstract

“…To overcome these challenges, many efforts have been devoted to optimizing XPCS measurements using thirdgeneration synchrotron sources. These efforts include careful considerations that aim to increase SNR, such as making use of the beam at X-ray energies with the highest X-ray brilliance, developing beamline optics that preserve both beam brilliance and coherence, and choosing detectors that are efficient in detecting X rays and are able to resolve speckles on a time scale commensurate with the sample dynamics (Roseker et al, 2011;Westermeier et al, 2013). Recently, a new scheme, referred to as X-ray speckle visibility spectroscopy, has been introduced.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous multiplexed materials characterization using a high-precision hard X-ray micro-slit array

Zhang

Allen

Levine

et al. 2015

J Synchrotron Radiat

View full text Add to dashboard Cite

The needs both for increased experimental throughput and for in operando characterization of functional materials under increasingly realistic experimental conditions have emerged as major challenges across the whole of crystallography. A novel measurement scheme that allows multiplexed simultaneous measurements from multiple nearby sample volumes is presented. This new approach enables better measurement statistics or direct probing of heterogeneous structure, dynamics or elemental composition. To illustrate, the submicrometer precision that optical lithography provides has been exploited to create a multiplexed form of ultra-small-angle scattering based X-ray photon correlation spectroscopy (USAXS-XPCS) using micro-slit arrays fabricated by photolithography. Multiplexed USAXS-XPCS is applied to follow the equilibrium dynamics of a simple colloidal suspension. While the dependence of the relaxation time on momentum transfer, and its relationship with the diffusion constant and the static structure factor, follow previous findings, this measurements-in-parallel approach reduces the statistical uncertainties of this photon-starved technique to below those associated with the instrument resolution. More importantly, we note the potential of the multiplexed scheme to elucidate the response of different components of a heterogeneous sample under identical experimental conditions in simultaneous measurements. In the context of the X-ray synchrotron community, this scheme is, in principle, applicable to all in-line synchrotron techniques. Indeed, it has the potential to open a new paradigm for in operando characterization of heterogeneous functional materials, a situation that will be even further enhanced by the ongoing development of multi-bend achromat storage ring designs as the next evolution of large-scale X-ray synchrotron facilities around the world.

show abstract

X-ray photon correlation spectroscopy using the Mythen 1D detector

Cited by 5 publications

References 5 publications

X-ray photon correlation spectroscopy

X-ray photon correlation spectroscopy

Photon-counting MCP/Timepix detectors for soft X-ray imaging and spectroscopic applications

Simultaneous multiplexed materials characterization using a high-precision hard X-ray micro-slit array

Contact Info

Product

Resources

About