Results 41 to 50 of about 2,319,252 (294)

Multi-beam X-ray ptychography using coded probes for rapid non-destructive high resolution imaging of extended samples

Scientific Reports, 2022
Imaging large areas of a sample non-destructively and with high resolution is of great interest for both science and industry. For scanning coherent X-ray diffraction microscopy, i. e., ptychography, the achievable scan area at a given spatial resolution
Mikhail Lyubomirskiy, Felix Wittwer, Maik Kahnt, Frieder Koch, Adam Kubec, Ken Vidar Falch, Jan Garrevoet, Martin Seyrich, Christian David, Christian G. Schroer   +9 more
doaj   +1 more source

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X‐ray examinations.
Sachith Welarathna, Sivakumar Velautham, Mihira Wanninayake, Sivananthan Sarasanandarajah   +3 more
wiley   +1 more source

Impact of the pathogenetic type of postmenopause on the occurrence of tumors of the female reproductive system

Опухоли женской репродуктивной системы, 2014
The study included patients observed and treated in Russian scientific centre of roentgenradiology Ministry of Health Russian Federation in the period from 1999 to 2010 (n = 405): including 111 postmenopausal women who are without anamnestic data on the ...
L. A. Ashrafyan, I. B. Antonova, N. A. Babayeva, S. V. Ivashina, T. A. Motskobili, A. A. Myagkova   +5 more
doaj   +1 more source

X-ray mirrors with sub-nanometre figure errors obtained by differential deposition of thin WSi2 films

Journal of Synchrotron Radiation, 2023
Differential deposition by DC magnetron sputtering was applied to correct for figure errors of X-ray mirrors to be deployed on low-emittance synchrotron beamlines. During the deposition process, the mirrors were moved in front of a beam-defining aperture
Patrice Bras, Christian Morawe, Sylvain Labouré, François Perrin, Amparo Vivo, Raymond Barrett   +5 more
doaj   +1 more source

Operational experience with Adaptive Gain Integrating Pixel Detectors at European XFEL

Frontiers in Physics
The European X-ray Free Electron Laser (European XFEL) is a cutting-edge user facility that generates per second up to 27,000 ultra-short, spatially coherent X-ray pulses within an energy range of 0.26 to more than 20 keV.
Jolanta Sztuk-Dambietz, Vratko Rovensky, Alexander Klujev, Torsten Laurus, Ulrich Trunk, Karim Ahmed, Olivier Meyer, Johannes Möller, Andrea Parenti, Natascha Raab, Roman Shayduk, Marcin Sikorski, Gabriele Ansaldi, Ulrike Bösenberg, Lopez M. Luis, Astrid Muenich, Thomas R. Preston, Philipp Schmidt, Stephan Stern, Richard Bean, Anders Madsen, Luca Gelisio, Steffen Hauf, Patrick Gessler, Krzysztof Wrona, Heinz Graafsma, Heinz Graafsma, Monica Turcato   +27 more
doaj   +1 more source

Magnetar-like X-ray Bursts from an Anomalous X-ray Pulsar [PDF]

, 2002
Anomalous X-ray Pulsars (AXPs) are a class of rare X-ray pulsars whose energy source has been perplexing for some 20 years. Unlike other, better understood X-ray pulsars, AXPs cannot be powered by rotation or by accretion from a binary companion, hence ...
A Tiengo, AI Ibrahim, BE Stern, BM Gaensler, C Kouveliotou, C Thompson, C Thompson, E Göǧüs¸, EV Gotthelf, FP Gavriil, GG Fahlman, GJ Fishman, J van Paradijs, K Jahoda, KA Arnaud, M Pivovaroff, P Chatterjee, PM Woods, QZ Liu, S Mereghetti, TE Strohmayer, VM Kaspi, VM Kaspi, VM Kaspi, WHG Lewin   +24 more
core   +2 more sources

X-ray bursts [PDF]

International Astronomical Union Colloquium, 1993
An X-ray burst is a sudden increase (rise time of order seconds) of the X-ray brightness of an X-ray source, which after reaching its peak decays, generally within a minute. The sky distribution of X-ray burst sources indicates that they are galactic objects (see Fig.
Jan van Paradijs, Jan van Paradijs, Walter H. G. Lewin   +2 more
openaire   +6 more sources

Crystallization behavior of ion beam sputtered HfO2 thin films and its effect on the laser-induced damage threshold

Journal of the European Optical Society-Rapid Publications, 2021
In this work, we present our results about the thermal crystallization of ion beam sputtered hafnia on 0001 SiO2 substrates and its effect on the laser-induced damage threshold (LIDT).
Zoltán Balogh-Michels, Igor Stevanovic, Aurelio Borzi, Andreas Bächli, Daniel Schachtler, Thomas Gischkat, Antonia Neels, Alexander Stuck, Roelene Botha   +8 more
doaj   +1 more source

Microsecond hydrodynamic interactions in dense colloidal dispersions probed at the European XFEL

IUCrJ, 2021
Many soft-matter systems are composed of macromolecules or nanoparticles suspended in water. The characteristic times at intrinsic length scales of a few nanometres fall therefore in the microsecond and sub-microsecond time regimes.
Francesco Dallari, Avni Jain, Marcin Sikorski, Johannes Möller, Richard Bean, Ulrike Boesenberg, Lara Frenzel, Claudia Goy, Jörg Hallmann, Yoonhee Kim, Irina Lokteva, Verena Markmann, Grant Mills, Angel Rodriguez-Fernandez, Wojciech Roseker, Markus Scholz, Roman Shayduk, Patrik Vagovic, Michael Walther, Fabian Westermeier, Anders Madsen, Adrian P. Mancuso, Gerhard Grübel, Felix Lehmkühler   +23 more
doaj   +1 more source

Correlation between X-ray tube current exposure time and X-ray photon number in GATE [PDF]

arXiv, 2021
The image quality of X-ray imaging relies heavily on the X-ray output number which is dependent on the X-ray tube current and the exposure time. Hybrid X-ray imaging modalities like X-ray luminescence CT (XLCT) and X-ray fluorescence CT (XFCT) rely on the intensity of the X-ray tube to provide an accurate image reconstruction of the nanoprobe ...
arxiv