Results 11 to 20 of about 846,225 (353)

The Impact of Nanoscale Percolation in Yttrium‐Doped BaZrO3 on the Oxygen Ion and Proton Conductivities: A Density Functional Theory and Kinetic Monte Carlo Study

open access: goldAdvanced Energy & Sustainability Research, 2022
Yttrium‐doped BaZrO3 is known for its high proton conductivity, making it an advanced energy material for various applications, like electrolyzers, fuel cells, or methane conversion cells.
Fabian M. Draber   +4 more
doaj   +2 more sources

K X-ray Emission for Slow Oxygen Ions Approaching a Copper Metal Surface [PDF]

open access: goldAtoms, 2022
We report on the K X-ray emission for 9–140 keV oxygen ions with initial charge states from 3 to 7 approaching a copper surface. The peak center of the measured X-ray spectrum slightly shifts towards higher energies with the increasing of the initial ...
Zhangyong Song   +11 more
doaj   +2 more sources

Distribution of O+ and \begin{document}${\text{O}}_{\text{2}}^{\text{+}}$\end{document} fluxes and their escape rates in the near-Mars magnetotail: A survey of MAVEN observations

open access: yesEarth and Planetary Physics, 2022
Tailward ion outflows in the Martian-induced magnetotail are known to be one of the major channels for Martian atmospheric escape. On the basis of nearly 6.5 years of observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission, we ...
HengLe Du   +7 more
doaj   +1 more source

Radioactive Beams in Particle Therapy: Past, Present, and Future

open access: yesFrontiers in Physics, 2020
Heavy ion therapy can deliver high doses with high precision. However, image guidance is needed to reduce range uncertainty. Radioactive ions are potentially ideal projectiles for radiotherapy because their decay can be used to visualize the beam ...
Marco Durante   +2 more
doaj   +1 more source

Escape of high-energy oxygen ions through magnetopause reconnection under northward IMF [PDF]

open access: yesAnnales Geophysicae, 2008
During a storm recovery phase on 15 May 2005, the Geotail spacecraft repeatedly observed high-energy (>180 keV) oxygen ions in the dayside magnetosheath near the equatorial plane.
S. Kasahara   +7 more
doaj   +1 more source

Discriminative detection of laser-accelerated multi-MeV carbon ions utilizing solid state nuclear track detectors

open access: yesScientific Reports, 2021
A new diagnosis method for the discriminative detection of laser-accelerated multi-MeV carbon ions from background oxygen ions utilizing solid-state nuclear track detectors (SSNTDs) is proposed. The idea is to combine two kinds of SSNTDs having different
Takamasa Hihara   +10 more
doaj   +1 more source

The ion-induced charge-exchange X-ray emission of the Jovian Auroras: Magnetospheric or solar wind origin? [PDF]

open access: yes, 2009
A new and more comprehensive model of charge-exchange induced X-ray emission, due to ions precipitating into the Jovian atmosphere near the poles, has been used to analyze spectral observations made by the Chandra X-ray Observatory.
Alexander Dalgarno   +14 more
core   +2 more sources

Microstructural evolution and its influence on oxygen diffusion in yttrium-doped ceria thin films

open access: yesMaterials Research Express, 2022
Ceria doped with rare earth ions (Ce _1−x M _x O _2−y (y = x/2)), which contain many oxygen vacancies, have become excellent electrolyte materials for solid oxide fuel cells and important buffer layers for coated conductors.
Jinzhan Li   +6 more
doaj   +1 more source

Oxygen sensing with ion channels [PDF]

open access: yesChannels, 2014
A decrease in arterial O2 pressure (pO2) elicits a peripheral chemosensory reflex that increases ventilation and sympathetic nerve activity.
openaire   +2 more sources

Cluster Observations on Time‐of‐Flight Effect of Oxygen Ions in Magnetotail Reconnection Exhaust Region

open access: yesGeophysical Research Letters, 2020
The D‐shaped ion velocity distribution generated by the time‐of‐flight (ToF) effect can be considered as an important characteristic of reconnection exhausts in the magnetopause and magnetotail reconnection processes.
T. Wu   +11 more
doaj   +1 more source

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