Results 31 to 40 of about 17,751 (261)

Multi-speckle X-ray photon correlation spectroscopy in the ultra-small-angle X-ray scattering range. [PDF]

J Synchrotron Radiat, 2016
Multi-speckle X-ray photon correlation spectroscopy (XPCS) measurements in the ultra-small-angle range are performed using a long pinhole collimation instrument in combination with two-dimensional photon-counting and high-sensitivity imaging detectors.
Möller J, Chushkin Y, Prevost S, Narayanan T.   +3 more
europepmc   +5 more sources

A Geiger-mode avalanche photodiode array for X-ray photon correlation spectroscopy [PDF]

Journal of Synchrotron Radiation, 2008
X-ray photon correlation spectroscopy (XPCS) provides an opportunity to study the dynamics of systems by measuring the temporal fluctuations in a far-field diffraction pattern. A two-dimensional detector system has been developed to investigate fluctuations in the frequency range of several Hz to kHz.
Johnson I, Sadygov Z, Bunk O, Menzel A, Pfeiffer F, Renker D   +5 more
openaire   +4 more sources

Quantum Theory of X-ray Photon Correlation Spectroscopy

Characterizing quantum materials is essential for understanding their microscopic interactions and advancing quantum technology. X-ray photon correlation spectroscopy (XPCS) with coherent X-ray sources offers access to higher-order correlations, but its theoretical basis, the Siegert relation, is derived from dynamical light scattering with independent
Siriviboon, Phum, Fu, Chu-Liang, Landry, Michael, Okabe, Ryotaro, Carrizales, Denisse Córdova, Wang, Yao, Li, Mingda   +6 more
openaire   +3 more sources

Time-resolved XPCS analysis across broad time-scales using multi-tau two-time correlations [PDF]

Journal of Synchrotron Radiation
We present a multi-tau two-time correlation (MT-2TC) analysis for X-ray photon correlation spectroscopy that enables efficient analysis of large-scale, high-frame-rate datasets collected at modern synchrotron beamlines. The method combines the advantages
Fabio Brugnara, Marco Cammarata, Yuriy Chushkin, Irene Festi, Massimo Granata, David Hofman, Matteo Leonardi, Daniele Marzi, Denis Nabari, Angela Trapananti, Simone Ziglio, Federico Zontone, Marco Zanatta, Giacomo Baldi   +13 more
doaj   +2 more sources

Beyond simple exponential correlation functions and equilibrium dynamics in x-ray photon correlation spectroscopy

New Journal of Physics, 2010
We discuss the complex dynamics in condensed matter studied with x-ray photon correlation spectroscopy (XPCS) in which non-exponential correlation functions and dispersion relations deviating from the simple diffusion law are observed. Results are presented for two systems whose dynamics are characterized by compressed, faster-than-exponential ...
Madsen, Anders, Leheny, R. L., Guo, Hongyu, Sprung, M., Czakkel, O.   +4 more
openaire   +3 more sources

Resolving molecular diffusion and aggregation of antibody proteins with megahertz X-ray free-electron laser pulses

Nature Communications, 2022
The European X-ray FreeElectron Laser Facility generates ultrashort hard X-ray pulses with megahertz repetition rate. Here, the authors probe the dynamics of dense antibody protein (Ig-PEG) solutions using megahertz X-ray photon correlation spectroscopy ...
Mario Reiser, Anita Girelli, Anastasia Ragulskaya, Sudipta Das, Sharon Berkowicz, Maddalena Bin, Marjorie Ladd-Parada, Mariia Filianina, Hanna-Friederike Poggemann, Nafisa Begam, Mohammad Sayed Akhundzadeh, Sonja Timmermann, Lisa Randolph, Yuriy Chushkin, Tilo Seydel, Ulrike Boesenberg, Jörg Hallmann, Johannes Möller, Angel Rodriguez-Fernandez, Robert Rosca, Robert Schaffer, Markus Scholz, Roman Shayduk, Alexey Zozulya, Anders Madsen, Frank Schreiber, Fajun Zhang, Fivos Perakis, Christian Gutt   +28 more
doaj   +1 more source

Special Issue on Trends in Sub-Microsecond X-ray Science with Coherent Beams

Applied Sciences, 2022
Large increases in synchrotron brightness have brought notable breakthroughs in measurement techniques that exploit transverse coherence, such as X-ray photon correlation spectroscopy (XPCS), coherent diffraction imaging (CDI), diffraction microscopy ...
Sooheyong Lee, Eric C. Landahl, Wojciech Roseker   +2 more
doaj   +1 more source

Towards a Counting Point Detector for Nanosecond Coherent X-ray Science

Applied Sciences, 2022
We present the technical realization of a high-speed hard X-ray single-photon counting-detection scheme based on a commercial avalanche silicon photodiode and high-speed oscilloscope.
Sooheyong Lee, Hyusang Kwon, Byeong-Gwan Cho, Eric C. Landahl   +3 more
doaj   +1 more source

X-ray free-electron laser heating of water at picosecond time scale

Physical Review Research, 2022
Split-pulse x-ray photon correlation spectroscopy using x-ray free-electron laser is a promising tool to probe atomic dynamics in liquid and soft-matter in picosecond time scale, which has been accessible only by spectroscopy.
Eva Zarkadoula, Yuya Shinohara, Takeshi Egami   +2 more
doaj   +1 more source

The PERCIVAL detector: first user experiments

Journal of Synchrotron Radiation, 2023
The PERCIVAL detector is a CMOS imager designed for the soft X-ray regime at photon sources. Although still in its final development phase, it has recently seen its first user experiments: ptychography at a free-electron laser, holographic imaging at a ...
J. Correa, M. Mehrjoo, R. Battistelli, F. Lehmkühler, A. Marras, C. B. Wunderer, T. Hirono, V. Felk, F. Krivan, S. Lange, I. Shevyakov, V. Vardanyan, M. Zimmer, M. Hoesch, K. Bagschik, N. Guerrini, B. Marsh, I. Sedgwick, G. Cautero, L. Stebel, D. Giuressi, R. H. Menk, A. Greer, T. Nicholls, W. Nichols, U. Pedersen, P. Shikhaliev, N. Tartoni, H. J. Hyun, S. H. Kim, S. Y. Park, K. S. Kim, F. Orsini, F. J. Iguaz, F. Büttner, B. Pfau, E. Plönjes, K. Kharitonov, M. Ruiz-Lopez, R. Pan, S. Gang, B. Keitel, H. Graafsma   +42 more
doaj   +1 more source