Results 1 to 10 of about 52,966 (265)
High-efficiency focusing and imaging by dielectric kinoform zone plate lenses with soft X-rays [PDF]
Journal of Synchrotron Radiation, 2023 With fast advances in enhancing the focusing/imaging resolution of Fresnel zone plate lenses toward sub-10 nm, low diffraction efficiency in connection with their rectangular zone shape still remains a big issue in both soft and hard X-ray microscopy. In
Xujie Tong +9 more
doaj +2 more sources
Softer and soft X-rays in macromolecular crystallography [PDF]
Journal of Synchrotron Radiation, 2005 The utilization and the potential of softer and soft X-rays in macromolecular crystallography as well as the challenges associated with the corresponding diffraction experiments and their possible remedies are reviewed.
John R Helliwell +2 more
exaly +6 more sources
Development of an X-ray ionization beam position monitor for PAL-XFEL soft X-rays [PDF]
Journal of Synchrotron RadiationThe Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL) operates hard X-ray and soft X-ray beamlines for conducting scientific experiments providing intense ultrashort X-ray pulses based on the self-amplified spontaneous emission (SASE ...
Seonghan Kim +4 more
doaj +2 more sources
Characterization of the Percival detector with soft X-rays [PDF]
Journal of Synchrotron Radiation, 2021 Frank Scholz +2 more
exaly +2 more sources
LABORATORY INVESTIGATION OF X-RAY PHOTOLYSIS OF METHANOL ICE AND ITS IMPLICATION ON ASTROPHYSICAL ENVIRONMENTS [PDF]
Química Nova, 2020 Methanol (CH3OH) is one of the most abundant organic molecules in astrophysical environments. It has been found in cold regions such as surfaces of comets, ices near young stellar objects and protoplanetary disks, as well as in the gas phase in different
Fabricio M. Freitas, Sérgio Pilling
doaj +2 more sources
The Soft X-ray Background [PDF]
Symposium - International Astronomical Union, 1973 A survey of soft X-ray background observations in the 0.1–10 keV range is presented. In the region above 1 keV, recent results on point X-ray sources are discussed and their integrated contribution to the diffuse background is estimated. However, the average luminosity of various classes of extragalactic X-ray sources is still not sufficiently well ...
H. Friedman +3 more
openaire +1 more source
Cervical Interspinous Ligament Sprain in a 6-Year-Old Boy
Journal of the Belgian Society of Radiology, 2022 Paediatric cervical spine trauma, though rare, is difficult to detect as the injuries are often soft-tissue injuries and thus not visible using conventional radiography. A 6-and-a-half-year-old child presented with neck pain following a fall.
Thomas Saliba, Hanna Salame, Denis Tack
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Role of hard X-ray emission in ionospheric D-layer disturbances during solar flares
Earth, Planets and Space, 2022 Any disturbance of the ionosphere may affect operational activities based on HF communication. The electron density is a critical parameter that controls levels of HF-signal absorption.
Carine Briand +3 more
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Characterization of an X-ray Source Generated by a Portable Low-Current X-Pinch
Applied Sciences, 2021 An X-pinch scheme of a low-current generator (45 kA, 50 ns rise time) is characterized as a potential efficient source of soft X-rays. The X-pinch target consists of wires of 5 μm in diameter—made from either tungsten (W) or gold (Au)-plated W—loaded at ...
Alexandros Skoulakis +8 more
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THE HARD X-RAY PERSPECTIVE ON THE SOFT X-RAY EXCESS [PDF]
The Astrophysical Journal, 2014 The X-ray spectra of many active galactic nuclei (AGN) exhibit a `soft excess' below 1keV, whose physical origin remains unclear. Diverse models have been suggested to account for it, including ionised reflection of X-rays from the inner part of the accretion disc, ionised winds/absorbers, and Comptonisation.
Vasudevan, Ranjan V. +7 more
openaire +3 more sources