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The high-intensity version of multiwavelength anomalous diffraction (MAD) has a potential for solving the phase problem in femtosecond crystallography with x-ray free-electron lasers (XFELs). For MAD phasing, it is required to calculate or…

Atomic Physics · Physics 2017-02-16 Sang-Kil Son , Henry N. Chapman , Robin Santra

Over the ten past years, various experimental studies of solid solutions A 1-x B x XO 4 (e.g. A = Sr, B = Pb, X = W) with scheelite structures have evidenced correlations between structural, vibrational modifications due to chemical…

Materials Science · Physics 2019-05-16 J-R Gavarri , F. Guinneton , M Arab , J-C Valmalette , S. Villain , A. Hallaoui , A. Taoufyq , B. Bakiz , A. Benlhachemi

Imaging experiments at the European X-ray Free Electron Laser (XFEL) require silicon pixel sensors with extraordinary performance specifications: Doses of up to 1 GGy of 12 keV photons, up to 10^5 12 keV photons per pixel of 200 \mum \times…

Instrumentation and Detectors · Physics 2012-01-11 Jiaguo Zhang , Ioana Pintilie , Eckhart Fretwurst , Robert Klanner , Hanno Perrey , Joern Schwandt

Polarization dependence has historically seen extensive use in x-ray spectroscopy to determine magnetic and local geometric properties, but more broadly as a way to gain extra sensitivity to electronic structure at the level of individual…

Electroactive polymer thin films undergo repeated reversible structural change during operation in electrochemical applications. While synchrotron X-ray scattering is powerful for the characterization of stand-alone and ex-situ organic thin…

The resolution of X-ray diffraction microscopy is limited by the maximum dose that can be delivered prior to sample damage. In the proposed Serial Crystallography method, the damage problem is addressed by distributing the total dose over…

Chirality is a structural property of molecules lacking mirror symmetry that has strong implications in diverse fields, ranging from life to materials sciences. Established spectroscopic methods that are sensitive to chirality, such as…

Sources of X-rays such as active galactic nuclei and X-ray binaries are often variable by orders of magnitude in luminosity over timescales of years. During and after these flares the surrounding gas is out of chemical and thermal…

Astrophysics of Galaxies · Physics 2019-04-09 Jonathan Mackey , Stefanie Walch , Daniel Seifried , Simon C. O. Glover , Richard Wünsch , Felix Aharonian

High energy resolution, hard X-ray spectroscopies are powerful element selective probes of the electronic and local structure of matter, with diverse applications in chemistry, physics, biology and materials science. The routine application…

Instrumentation and Detectors · Physics 2016-11-03 Zoltán Németh , Jakub Szlachetko , Éva G. Bajnóczi , György Vankó

The multi-wavelength anomalous diffraction (MAD) method is used to determine phase information in x-ray crystallography by employing dispersion corrections from heavy atoms on coherent x-ray scattering. X-ray free-electron lasers (FELs)…

Atomic Physics · Physics 2011-11-18 Sang-Kil Son , Henry N. Chapman , Robin Santra

Thin films of the superconductor YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) were modified by low-energy light-ion irradiation employing collimated or focused He$^+$ beams, and the long-term stability of irradiation-induced defects was investigated.…

Nanoprobe X-ray diffraction (nXRD) using focused synchrotron radiation is a powerful technique to study the structural properties of individual semiconductor nanowires. However, when performing the experiment under ambient conditions, the…

We have observed the signatures of valence electron rearrangement in photoexcited ammonia using ultrafast hard X-ray scattering. Time-resolved X-ray scattering is a powerful tool for imaging structural dynamics in molecules because of the…

We present Chandra HETG spectra of seven cataclysmic variables. We find that they divide unambiguously into two distinct types. Spectra of the first type are remarkably well fit by a simple cooling flow model, which assumes only…

Astrophysics · Physics 2009-11-07 K. Mukai , A. Kinkhabwala , J. R. Peterson , S. M. Kahn , F. Paerels

X-ray diffraction of silicon irradiated with tightly focused femtosecond x-ray pulses (photon energy: 11.5 keV, pulse duration: 6 fs) was measured at various x-ray intensities up to $4.6\times10^{19}$ W/cm$^2$. The measurement reveals that…

Crystal structure prediction for a given chemical composition has long been a challenge in condensed-matter science. We have recently shown that experimental powder X-ray diffraction (XRD) data are helpful in a crystal structure search…

Materials Science · Physics 2023-01-30 Seiji Yoshikawa , Ryuhei Sato , Ryosuke Akashi , Synge Todo , Shinji Tsuneyuki

We present an update of 3C 273's database hosted by the ISDC, completed with data from radio to gamma-ray observations over the last 10 years. We use this large data set to study the multiwavelength properties of this quasar,especially…

We investigate the stability of crystalline undulator radiation (CUR) peaks emitted by 530 MeV positron channelling in periodically bent C(110) crystals with varying bending amplitudes and bending periods. Relativistic molecular dynamics…

Accelerator Physics · Physics 2026-01-13 Matthew D. Dickers , Felipe Fantuzzi , Nigel J. Mason , Andrei V. Korol , Andrey V. Solov'yov

Electron-phonon interaction is of central importance for the electrical and heat transport properties of metals, and is directly responsible for charge-density-waves or (conventional) superconducting instabilities. The direct observation of…

Superconductivity · Physics 2022-02-02 S. M. Souliou , A. Bosak , G. Garbarino , M. Le Tacon