Results 21 to 30 of about 578,265 (196)

On inverse scattering for the multidimensional relativistic Newton equation at high energies [PDF]

open access: yes, 2006
Consider the Newton equation in the relativistic case (that is the Newton-Einstein equation) $$\eqalign{\dot p = F(x),& F(x)=-\nabla V(x),\cr p={\dot x \over \sqrt{1-{|\dot x|^2 \over c^2}}},& \dot p={dp\over dt}, \dot x={dx\over dt}, x\in C^1(\R,\R^d),}\
Jollivet, Alexandre
core   +3 more sources

Application of relativistic scattering theory of x rays to diffraction anomalous fine structure in Cu [PDF]

open access: yes, 1998
We apply our recent first-principles formalism of magnetic scattering of circularly polarized x rays to a single Cu crystal. We demonstrate the ability of our formalism to interpret the crystalline environment related near-edge fine structure features in
A. Bansil   +19 more
core   +1 more source

Geant4 simulations of soft proton scattering in X-ray optics. A tentative validation using laboratory measurements [PDF]

open access: yes, 2017
Low energy protons (< 300 keV) can enter the field of view of X-ray space telescopes, scatter at small incident angles, and deposit energy on the detector, causing intense background flares at the focal plane or in the most extreme cases, damaging the X ...
Alfonso Mantero   +9 more
core   +2 more sources

Effects of Interstellar Dust Scattering on the X-ray Eclipses of the LMXB AX J1745.6-2901 in the Galactic Center [PDF]

open access: yes, 2018
AX J1745.6-2901 is an eclipsing low mass X-ray binary (LMXB) in the Galactic Centre (GC). It shows significant X-ray excess emission during the eclipse phase, and its eclipse light curve shows an asymmetric shape.
Haberl, Frank   +4 more
core   +2 more sources

Megahertz-rate ultrafast X-ray scattering and holographic imaging at the European XFEL

open access: yesJournal of Synchrotron Radiation, 2022
The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers access to X-rays with unprecedented brightness, coherence and pulse duration ...
Nanna Zhou Hagström   +98 more
doaj   +1 more source

UV Imaging Polarimetry of the Seyfert 2 Galaxy Mrk 3 [PDF]

open access: yes, 2001
We present UV imaging polarimetry data of the Seyfert 2 galaxy Mrk 3 taken by the Hubble Space Telescope. The polarized flux is found to be extended to ~1 kpc from the nucleus, and the position angles of polarization are centrosymmetric, confirming that ...
Julian H. Krolik   +8 more
core   +3 more sources

Scattered X-rays in x-ray photography [PDF]

open access: yesJournal of the Franklin Institute, 1922
n ...
openaire   +1 more source

X-ray scatter in projection radiography

open access: yesRadiation Protection Dosimetry, 2023
Abstract Projection radiography is the most common radiological modality, and radiation safety of it concerns both radiation workers and the public. We measured and generated a series of scattered radiation maps for projection radiography and estimated effective doses of the supporting person during exposure.
Satu Ylimaula   +6 more
openaire   +2 more sources

Membrane Protein Structures in Lipid Bilayers; Small-Angle Neutron Scattering With Contrast-Matched Bicontinuous Cubic Phases

open access: yesFrontiers in Chemistry, 2021
This perspective describes advances in determining membrane protein structures in lipid bilayers using small-angle neutron scattering (SANS). Differentially labeled detergents with a homogeneous scattering length density facilitate contrast matching of ...
Charlotte E. Conn   +7 more
doaj   +1 more source

Variations and Correlations in Cyclotron Resonant Scattering Features of Vela X-1 Studied by INTEGRAL [PDF]

open access: yes, 2014
Long-term hard X-ray monitoring observations on high mass X-ray binary Vela X-1 from 2003 -- 2011 have been performed by INTEGRAL. I systematically analyzed the average hard X-ray spectra of Vela X-1 from 3 -- 200 keV, with main aims to detect cyclotron ...
Wang, Wei
core   +1 more source

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