Results 11 to 20 of about 8,231,754 (397)

Auroral E-region electron density gradients measured [PDF]

open access: yesAnnales Geophysicae, 2000
In the theory of E-region plasma instabilities, the ambient electric field and electron density gradient are both included in the same dispersion relation as the key parameters that provide the energy for the generation and growth of electrostatic ...
C. Haldoupis, K. Schlegel, G. Hussey
doaj   +1 more source

Direct imaging of electron density with a scanning transmission electron microscope

open access: yesNature Communications, 2023
Recent studies of secondary electron (SE) emission in scanning transmission electron microscopes suggest that material’s properties such as electrical conductivity, connectivity, and work function can be probed with atomic scale resolution using a ...
Ondrej Dyck   +8 more
doaj   +1 more source

Pseudopotentials from electron density [PDF]

open access: yesPhysical Review A, 1996
A method is introduced that allows the construction of pseudopotentials in the density-functional theory. This method is based on a procedure worked out by one of the authors [J. Phys. B 26, 43 (1993); Philos. Mag. B 69, 779 (1994)] for determining Kohn-Sham potentials, one-electron orbitals, and energies from the electron density.
, Nagy, , Andrejkovics
openaire   +2 more sources

Tracing electron density changes in langbeinite under pressure

open access: yesIUCrJ, 2022
Pressure is well known to dramatically alter physical properties and chemical behaviour of materials, much of which is due to the changes in chemical bonding that accompany compression.
Roman Gajda   +4 more
doaj   +1 more source

Localizing electron density errors in density functional theory [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2019
The accuracy of different density functional approximations is assessed through the use of quantum chemical topology on molecular electron densities.
Rubén Laplaza   +2 more
openaire   +3 more sources

Electron density profile modeling

open access: yesAnnals of Geophysics, 1996
The Base Point Model (BPM) is used to model the electron density (N) profile in the ionosphere, This model assumes two Chapman profile expressions one for the bottomside and one for the topside, and requires a characteristic point called "F region base ...
T. Heredia   +2 more
doaj   +1 more source

The Comparison of Electron Density between CSES In Situ and Ground-Based Observations in China

open access: yesRemote Sensing, 2022
As the observation accuracy of parameters in the ionosphere cannot be directly checked, the comparison with other observations is the main way to evaluate the data quality of satellite measurements.
Jing Liu   +3 more
doaj   +1 more source

Spectroscopic Characterization of a Pulsed Low-Current High-Voltage Discharge Operated at Atmospheric Pressure

open access: yesApplied Sciences, 2022
The advantages of pulsed low-current high-voltage discharges operated at atmospheric pressure and the ease with which such discharges can be implemented industrially contributed to their popularity. However, the high reactivity of a pulsed plasma implies
Michał Szulc   +3 more
doaj   +1 more source

The electron density distribution in CN−, LiCN and LiNC. The use of minimal and extended basis set SCF calculations [PDF]

open access: yes, 1977
Electron density maps are reported for the CN−ion and the LiCN and LiNC molecules, calculated from molecular wave-functions near the Hartree-Fock limit. The electron density distribution derived from CNDO/ 2 wavefunctions does not resemble the ab initio ...
Bats, J.W., Feil, D.
core   +2 more sources

Active electron density modulation of Co3O4 based catalysts endows highly oxygen evolution capability.

open access: yesAngewandte Chemie, 2020
Despite the fact that a lots of strategies have been developed to improve the efficiency of oxygen evolution reaction (OER), how to precisely and properly modulating the surface electronic properties of catalysts to improve the catalytic activity is ...
Dong He   +7 more
semanticscholar   +1 more source

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