X-ray FELs, such as the LCLS and TESLA FEL, require electron beams with large peak current and very small emittance. The X-ray peak power, temporal and spectral properties, depend significantly on details of the electron beam phase space distribution. The electron beam distribution is determined by many effects, as the emission process at the gun photo-cathode, bunch compression, acceleration a...

We present a weak lensing analysis and comparison to optical and Xray maps of the close pair of massive clusters A222/223. Indications for a filamentary connection between the clusters are found and discussed.

Articles you may be interested in Selfinduced spatiallyholeburned distributed feedback resonator for xray lasers AIP Conf. Facet reflection independent, single longitudinal mode oscillation in a GaAlAs/GaAs distributed feedback laser equipped with a gaincoupling mechanism Appl.

The limited capability and energy constraint of smartphones have posed a significant challenge to running the “newest and hottest” applications which are becoming increasingly resource demanding, e.g., realtime image recognition. In this paper, we revisit the decade-old general concept of offloading computation to remote servers by focusing on a largely unsolved problem: how to automatically de...

Pedicle screw insertion technique has made revolution in the surgical treatment of spinal fractures and spinal disorders. Although Xray fluoroscopy based navigation is popular, there is risk of prolonged exposure to Xray radiation. Systems that have lower radiation risk are generally quite expensive. The position and orientation of the drill is clinically very important in pedicle screw fixatio...

Zinc oxide (ZnO) and samarium (Sm) doped ZnO nanoparticles (NPs) were synthesised by solution combustion approach using citric acid as fuel. The formation of hexagonal wurtzite structure pure Sm powder was prepared confirmed x-ray diffraction (XRD). formation, morphological elemental analysis analysed XRD, Raman spectra, scanning electron microscopy (SEM) xray fluorescence spectroscopy (XRF). r...

Crystal distortions modify the propagation of x-rays in single crystal materials, and xray topography can be used to record these modifications on a film thus providing images of the distributions and nature of defects, dislocations, strains, precipitates, etc. in semiconductors. Small variations of contrast, which often need to be analysed can be rendered invisible. Furthermore, artefacts in t...

The objective of this study was to evaluate the diagnostic value of skull radiograph alone in young children in screening of skeletal dysplasias and dysostoses in comparison with whole skeletal survey. It is a retrospective study which includes 1000 high risk children who undergone whole skeletal survey. 20 patients were diagnosed as dysplasia/dysostoses out of which 18 patients had skull abnor...