Results 21 to 30 of about 1,034,226 (285)

Three-dimensional electronic spectroscopy of excitons in asymmetric double quantum wells

open access: yesNew Journal of Physics, 2013
We utilize a three-dimensional (3D) visible spectroscopy to reveal and explore coherent coupling between excitons localized to GaAs quantum wells separated by barriers 4 and 6 nm wide. The coupled excitons were energetically separated by 43 meV, close to
C R Hall   +3 more
doaj   +1 more source

The crucial contribution of X-ray fluorescence spectroscopy in medicine

open access: yesComptes 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
doaj   +1 more source

Low dose X-ray speckle visibility spectroscopy reveals nanoscale dynamics in radiation sensitive ionic liquids [PDF]

open access: yes, 2018
X-ray radiation damage provides a serious bottle neck for investigating {\mu}s to s dynamics on nanometer length scales employing X-ray photon correlation spectroscopy.
Gutt, Christian   +8 more
core   +3 more sources

Scanning tunnelling miscroscopy/spectroscopy and X-ray absorption spectroscopy studies of Co adatoms and anoislands on highly oriented pyrolytic graphite [PDF]

open access: yes, 2010
In this paper, the scanning tunneling microscopy, scanning tunneling spectroscopy and X-ray absorption spectroscopy of cobalt adatoms and nanoislands were studied on a highly oriented pyrolytic graphite.
de Jong, M.P.   +6 more
core   +8 more sources

Resonant X-ray emission spectroscopy using self-seeded hard X-ray pulses at PAL-XFEL

open access: yesJournal of Synchrotron Radiation, 2023
Self-seeded hard X-ray pulses at PAL-XFEL were used to commission a resonant X-ray emission spectroscopy experiment with a von Hamos spectrometer. The self-seeded beam, generated through forward Bragg diffraction of the [202] peak in a 100 µm-thick ...
Tae-Kyu Choi   +10 more
doaj   +1 more source

Luminescent and Scintillating Properties of Lanthanum Fluoride Nanocrystals in Response to Gamma/Neutron Irradiation: Codoping with Ce Activator, Yb Wavelength Shifter, and Gd Neutron Captor [PDF]

open access: yes, 2016
A novel concept for detection and spectroscopy of gamma rays, and detection of thermal neutrons based on codoped lanthanum fluoride nanocrystals containing gadolinium is presented.The trends of colloidal synthesis of the mentioned material, LaF3 co-doped
Blostein, Juan Jerónimo   +5 more
core   +2 more sources

Interferometry Based EUV Spectrometer

open access: yesIEEE 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
doaj   +1 more source

Application of reverse micelle sol-gel synthesis for bulk doping and heteroatoms Surface Enrichment in Mo-Doped TiO 2 nanoparticles [PDF]

open access: yes, 2019
TiO 2 nanoparticles containing 0.0, 1.0, 5.0, and 10.0 wt.% Mo were prepared by a reverse micelle template assisted sol-gel method allowing the dispersion of Mo atoms in the TiO 2 matrix.
Armandi, Marco   +8 more
core   +2 more sources

From Femtoseconds to Hours—Measuring Dynamics over 18 Orders of Magnitude with Coherent X-rays

open access: yesApplied 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
doaj   +1 more source

X-Ray and Near-Infrared Spectroscopy of Dim X-Ray Point Sources Constituting the Galactic Ridge X-Ray Emission

open access: yesActa 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
doaj   +1 more source

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