Results 21 to 30 of about 601,668 (305)
The Astronomy and Astrophysics Review, 2009 The Astronomy and Astrophysics Review, 17 (3)
Guedel, Manuel, Nazé, Yaël
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Interferometry Based EUV Spectrometer
IEEE Photonics Journal, 2017 A compact and wavelength-calibration-free interferometric scheme was numerically and experimentally investigated using an extreme ultraviolet (EUV) source generated by a laser-produced plasma. A Michelson-type interferometer with a common path, formed by
Yen-Yin Li +8 more
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The crucial contribution of X-ray fluorescence spectroscopy in medicine
Comptes Rendus. Chimie, 2021 This contribution tries to indicate to the clinician what kind of information can be investigated through X-ray fluorescence, what kind of information can be extracted from this spectroscopy and finally how it competes with other tools described in ...
Bazin, Dominique +8 more
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Preliminary characterization of calcium chemical environment in apatitic and non-apatitic calcium phosphates of biological interest by X-ray absorption spectroscopy [PDF]
, 2005 Several reports have mentioned the existence of non-apatitic environments of phosphate and carbonate ions in synthetic and biological poorly crystalline apatites.
Susini, Jean +4 more
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Revealing core-valence interactions in solution with femtosecond X-ray pump X-ray probe spectroscopy
Nature Communications, 2023 Femtosecond pump-probe spectroscopy using ultrafast optical and infrared pulses has become an essential tool to discover and understand complex electronic and structural dynamics in solvated molecular, biological, and material systems. Here we report the
Robert B. Weakly +16 more
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From Femtoseconds to Hours—Measuring Dynamics over 18 Orders of Magnitude with Coherent X-rays
Applied Sciences, 2021 X-ray photon correlation spectroscopy (XPCS) enables the study of sample dynamics between micrometer and atomic length scales. As a coherent scattering technique, it benefits from the increased brilliance of the next-generation synchrotron radiation and ...
Felix Lehmkühler +2 more
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Acta Polytechnica CTU Proceedings, 2014 We present the results of X-ray and Near-Infrared observations of the Galactic Ridge X-ray Emission (GRXE). We extracted 2,002 X-ray point sources in the Chandra Bulge Field (l =0°.113, b = 1°.424) down to ~10-14.8 ergscm-2s-1 in 2-8 keV band with the ...
Kumiko Morihana +2 more
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Physical Review Letters, 2016 X-ray echo spectroscopy, a counterpart of neutron spin-echo, is being introduced here to overcome limitations in spectral resolution and weak signals of the traditional inelastic x-ray scattering (IXS) probes. An image of a point-like x-ray source is defocused by a dispersing system comprised of asymmetrically cut specially arranged Bragg diffracting ...
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X–ray spectroscopy of astrophysical plasmas
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002 We provide a qualitative review of key X-ray spectral diagnostics of astrophysical plasmas. We begin with a brief discussion of the two major types of equilibria, collisional ionization and photoionization, and then consider the behaviour of hydrogen-like, helium-like, iron L-shell and iron K-shell transitions for these separate cases.
Kahn, Steven M. +3 more
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, 2013 A set of silver coins from the collection of Déri Museum Debrecen (Hungary) was examined by X-ray fluorescent elemental analysis with the aim to assign the coins to different groups with the best possible precision based on the acquired chemical ...
Anita Rácz +7 more
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