scholarly journals Atomic Migration Studies with X-Ray Photon Correlation Spectroscopy

2014 ◽  
Vol 2 ◽  
pp. 73-94 ◽  
Author(s):  
Markus Stana ◽  
Manuel Ross ◽  
Bogdan Sepiol
Keyword(s):  
Low Temperatures ◽  
Short Range ◽  
Short Range Order ◽  
Photon Correlation Spectroscopy ◽  
Condensed Matter ◽  
Correlation Spectroscopy ◽  
Atomic Scale ◽  
Photon Correlation ◽  
X Ray ◽  
Amorphous Systems

The new technique of atomic-scale X-ray Photon Correlation Spectroscopy (aXPCS) makesuse of a coherent X-ray beam to study the dynamics of various processes in condensed matter systems.Particularly atomistic migration mechanisms are still far from being understood in most of intermetallicalloys and in amorphous systems. Special emphasis must be given to the opportunity to measureatomistic diffusion at relatively low temperatures where such measurements were far out of reach withpreviously established methods. The importance of short-range order is demonstrated on the basis ofMonte Carlo simulations.

scholarly journals Hard X-Ray Photon Correlation Spectroscopy Methods for Materials Studies

2018 ◽  
Vol 48 (1) ◽  
pp. 167-190 ◽  
Author(s):  
Alec R. Sandy ◽  
Qingteng Zhang ◽  
Laurence B. Lurio
Keyword(s):  
Photon Correlation Spectroscopy ◽  
Condensed Matter ◽  
Dynamic Structure ◽  
Correlation Spectroscopy ◽  
Fourth Generation ◽  
Photon Correlation ◽  
X Ray ◽  
The Past ◽  
Materials Research ◽  
The Impact

Understanding and designing sophisticated new materials require measurements of not only their average structural properties but also their dynamic behavior. X-ray photon correlation spectroscopy (XPCS) provides this information by characterizing fluctuations in condensed matter across a broad range of length scales and timescales. Over the past two decades, XPCS has provided a wide variety of results in the study of materials properties. In this review, we provide an overview of coherence, photon correlation spectroscopy, and the dynamic structure factor as well as information on the mechanics of XPCS experiments. We highlight the impact that this infrastructure has had on materials research and the bright future that is forthcoming with the anticipated upgrade of many third-generation synchrotron sources to fourth-generation multibend achromat sources.

A small-angle scattering chamber for x-ray photon correlation spectroscopy at low temperatures

2011 ◽  
Vol 82 (2) ◽  
pp. 025109 ◽  
Author(s):  
Ricardo Steinmann ◽  
Yuriy Chushkin ◽  
Chiara Caronna ◽  
Joel Chavanne ◽  
Anders Madsen
Keyword(s):  
Small Angle ◽  
Low Temperatures ◽  
Photon Correlation Spectroscopy ◽  
Small Angle Scattering ◽  
Correlation Spectroscopy ◽  
Photon Correlation ◽  
X Ray ◽  
Angle Scattering ◽  
Scattering Chamber

scholarly journals The X-ray Correlation Spectroscopy instrument at the Linac Coherent Light Source

2015 ◽  
Vol 22 (3) ◽  
pp. 508-513 ◽  
Author(s):  
Roberto Alonso-Mori ◽  
Chiara Caronna ◽  
Matthieu Chollet ◽  
Robin Curtis ◽  
Daniel S. Damiani ◽  
...  
Keyword(s):  
Light Source ◽  
Photon Correlation Spectroscopy ◽  
Condensed Matter ◽  
Correlation Spectroscopy ◽  
Free Electron Lasers ◽  
Coherent Light ◽  
Photon Correlation ◽  
X Ray ◽  
Linac Coherent Light Source ◽  
Coherent Light Source

The X-ray Correlation Spectroscopy instrument is dedicated to the study of dynamics in condensed matter systems using the unique coherence properties of free-electron lasers. It covers a photon energy range of 4–25 keV. The intrinsic temporal characteristics of the Linac Coherent Light Source, in particular the 120 Hz repetition rate, allow for the investigation of slow dynamics (milliseconds) by means of X-ray photon correlation spectroscopy. Double-pulse schemes could probe dynamics on the picosecond timescale. A description of the instrument capabilities and recent achievements is presented.

X-ray photon correlation spectroscopy

2014 ◽  
Vol 21 (5) ◽  
pp. 1057-1064 ◽  
Author(s):  
Oleg G. Shpyrko
Keyword(s):  
Time Scales ◽  
Temporal Resolution ◽  
Photon Correlation Spectroscopy ◽  
Condensed Matter ◽  
Correlation Spectroscopy ◽  
Basic Principles ◽  
Photon Correlation ◽  
X Ray ◽  
Wide Range ◽  
Novel Approaches

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.

scholarly journals From Femtoseconds to Hours–Measuring Dynamics over 18 Orders of Magnitude with Coherent X-rays

2021 ◽  
Vol 11 (13) ◽  
pp. 6179
Author(s):  
Felix Lehmkühler ◽  
Wojciech Roseker ◽  
Gerhard Grübel
Keyword(s):  
Time Scales ◽  
Free Electron Laser ◽  
Photon Correlation Spectroscopy ◽  
Signal To Noise Ratio ◽  
Coherent Scattering ◽  
Correlation Spectroscopy ◽  
X Rays ◽  
Photon Correlation ◽  
X Ray ◽  
Scattering Technique

X-ray photon correlation spectroscopy (XPCS) enables the study of sample dynamics between micrometer and atomic length scales. As a coherent scattering technique, it benefits from the increased brilliance of the next-generation synchrotron radiation and Free-Electron Laser (FEL) sources. In this article, we will introduce the XPCS concepts and review the latest developments of XPCS with special attention on the extension of accessible time scales to sub-μs and the application of XPCS at FELs. Furthermore, we will discuss future opportunities of XPCS and the related technique X-ray speckle visibility spectroscopy (XSVS) at new X-ray sources. Due to its particular signal-to-noise ratio, the time scales accessible by XPCS scale with the square of the coherent flux, allowing to dramatically extend its applications. This will soon enable studies over more than 18 orders of magnitude in time by XPCS and XSVS.

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