Results 21 to 30 of about 9,379,945 (304)

Two-way tuning of structural order in metallic glasses

open access: yesNature Communications, 2020
While metallic glasses are expected to have tunable structures, these have rarely been demonstrated. Here, the authors combine temperature and pressure to show a two-way structural tuning in rare earth-based metallic glasses beyond the nearest-neighbor ...
Hongbo Lou   +14 more
doaj   +1 more source

Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]

open access: yes, 2013
To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline   +8 more
core   +1 more source

X-Ray burst sources [PDF]

open access: yesInternational Astronomical Union Colloquium, 1986
AbstractType I cosmic X-ray bursts are widely thought to result from thermonuclear flashes in the surface layers of accreting neutron stars. The thermonuclear-flash model is able to account for a wide variety of observed burst phenomena. However, a number of theoretical and observational problems persist.
Fulvio Melia, Paul C. Joss
openaire   +1 more source

Update on laser-driven X-ray sources at ELI Beamlines [PDF]

open access: yes, 2021
Three main paths have been selected within the ELI Beamlines research program for transforming driving laser pulses into brilliant beams of short wavelength radiation: High-order harmonic generation in gases, Plasma X-ray sources, and sources based on ...
Hort O.   +6 more
core   +1 more source

Local structure of liquid gallium under pressure

open access: yesScientific Reports, 2017
In situ high energy X-ray pair distribution function (PDF) measurements, microtomography and reverse Monte Carlo simulations were used to characterize the local structure of liquid gallium up to 1.9 GPa.
Renfeng Li   +10 more
doaj   +1 more source

X-ray observations of ultraluminous X-ray sources [PDF]

open access: yesAstrophysics and Space Science, 2007
Invited talk at the 5th Stromlo Symposium. 10 pages, 4 figures.
openaire   +4 more sources

The novel high-pressure/high-temperature compound Co12P7 determined from synchrotron data

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
The structural properties of cobalt phosphides were investigated at high pressures and temperatures to better understand the behavior of metal-rich phosphides in Earth and planetary interiors. Using single-crystal X-ray diffraction synchrotron data and a
Claire Zurkowski   +5 more
doaj   +1 more source

Altered chemistry of oxygen and iron under deep Earth conditions

open access: yesNature Communications, 2019
Iron oxides prevail in the deep Earth, at extreme pressures and temperatures, with different stoichiometries than in ambient conditions. Here, high-pressure synchrotron X-ray spectroscopic measurements reveal the oxidation states of Fe and O in iron ...
Jin Liu   +9 more
doaj   +1 more source

Pinch plasmas as intense X-ray sources for laboratory applications

open access: yes, 2022
S.479-482 : Abb.,Lit.Pinch plasma x-ray sources have been developed for x-ray lithography and x-ray microscopy. The lithography source is compatible with the electron storage ring printing process with respect to spectrum and enables full depth exposures
Neff, W.   +4 more
core   +1 more source

X-Ray Burst Sources [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1977
Since those reviews there have been very important new developments. First, a surprisingly new animal, GRO J1744—28 (better known as the Bursting Pulsar), made its debut in 1995. Second, but NOT last, in 1996/97 kHz pulsations were discovered in the persistent emission of several burst sources, and near coherent pulsations were detected in type I X-ray
openaire   +2 more sources

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