Results 61 to 70 of about 578,265 (196)

An experiment of X-ray photon–photon elastic scattering with a Laue-case beam collider

Physics Letters B, 2016
We report a search for photon–photon elastic scattering in vacuum in the X-ray region at an energy in the center of mass system of ωcms=6.5keV for which the QED cross section is σQED=2.5×10−47m2.
T. Yamaji, T. Inada, T. Yamazaki, T. Namba, S. Asai, T. Kobayashi, K. Tamasaku, Y. Tanaka, Y. Inubushi, K. Sawada, M. Yabashi, T. Ishikawa   +11 more
doaj   +1 more source

Analytical evaluation of the X-ray scattering contribution to imaging degradation in grazing-incidence X-ray telescopes

, 2007
The focusing performance of X-ray optics (conveniently expressed in terms of HEW, Half Energy Width) strongly depend on both mirrors deformations and photon scattering caused by the microroughness of reflecting surfaces.
Aschenbach, Christensen, Church, Church, D. Spiga, De Korte, Freyberg, Harvey, Joensen, Kozhevnikov, Pareschi, Spiller, Stearns, Van Speybroeck, Willingale   +14 more
core   +2 more sources

Modelling a Transition-Edge Sensor X-ray Microcalorimeter Linear Array for Compton Profile Measurements and Energy Dispersive Diffraction

, 2019
Transition-edge sensors are a type of superconducting detector that offers high energy resolution based on their sharp resistance-temperature feature in the superconducting-to-normal transition.
Gades, Lisa M., Guruswamy, Tejas, Miceli, Antonino, Patel, Umeshkumar M., Quaranta, Orlando, Yan, Daikang   +5 more
core   +1 more source

The Global Implications of the Hard Excess II: Analysis of the Local population of Radio Quiet AGN [PDF]

, 2015
Active galactic nuclei (AGN) show evidence for reprocessing gas, outflowing from the accreting black hole. The combined effects of absorption and scattering from the circumnuclear material likely explains the `hard excess' of X-ray emission above 20 keV,
Clayton, M., DiLiello, J., Gofford, J., Miller, L., Patrick, A., Reeves, J. N., Tatum, M. M., Turner, T. J.   +7 more
core   +2 more sources

Refining short-range order parameters from the three-dimensional diffuse scattering in single-crystal electron diffraction data

IUCrJ
Our study compares short-range order parameters refined from the diffuse scattering in single-crystal X-ray and single-crystal electron diffraction data. Nb0.84CoSb was chosen as a reference material.
Romy Poppe, Nikolaj Roth, Reinhard B. Neder, Lukas Palatinus, Bo Brummerstedt Iversen, Joke Hadermann   +5 more
doaj   +1 more source

Tunable optical cavity for an x-ray free-electron-laser oscillator

Physical Review Special Topics. Accelerators and Beams, 2009
An x-ray free-electron laser oscillator proposed recently for hard x rays [K. Kim, Y. Shvyd’ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.244802] can be made tunable by using an x-ray cavity composed of four
Kwang-Je Kim, Yuri V. Shvyd’ko
doaj   +1 more source

The Structure of Amorphous and Deeply Supercooled Liquid Alumina

Frontiers in Materials, 2019
Liquid Al2O3 has been supercooled more than 500 K below its melting point (Tm = 2,327 K) using aerodynamic levitation and laser heating techniques. High energy synchrotron x-ray measurements were performed over a temperature range of 1,817 ≤ T (K) ≤ 2 ...
Caijuan Shi, Caijuan Shi, Oliver L. G. Alderman, Diana Berman, Jincheng Du, Joerg Neuefeind, Anthony Tamalonis, J. K. Richard Weber, J. K. Richard Weber, Jinglin You, Chris J. Benmore   +10 more
doaj   +1 more source

XXVI. Note on X-rays and scattered X-rays [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1908
n ...
openaire   +2 more sources

Design and Application of a Gas Diffusion Electrode (GDE) Cell for Operando and In Situ Studies

CHIMIA
Presented here is an electrochemical three-electrode Gas Diffusion Electrode (GDE) cell tailored for operandoand in situ investigations of electrocatalytic processes, with a particular focus on X-ray scattering studies.
Gustav K. H. Wiberg, Rebecca K. Pittkowski, Stefanie Punke , Olivia Aalling-Frederiksen , Kirsten M. Ø. Jensen, Matthias Arenz   +5 more
doaj   +1 more source

Theory of Anomalous X-ray Scattering in Orbital Ordered Manganites

, 1997
We study theoretically the anomalous X-ray scattering as a new probe to observe the orbital orderings and excitations in perovskite manganites. The scattering matrix is given by the virtual electronic excitations from Mn $1s$ level to unoccupied Mn $4p ...
Ishihara, Sumio, Maekawa, Sadamichi
core   +1 more source