Results 11 to 20 of about 4,690,653 (292)

Electron Density Distribution in Organometallic Materials [PDF]

open access: yesCHIMIA, 2009
The electron density distribution is a fundamental property that provides information on the way in which atoms are held together to form molecules, polymers or supramolecular aggregates.
Piero Macchi
doaj   +2 more sources

A density-temperature description of the outer electron radiation belt during geomagnetic storms [PDF]

open access: yes, 2010
Bi-Maxwellian fits are made to energetic-electron flux measurements from seven satellites in geosynchronous orbit, yielding a number density (n) and temperature (T) description of the outer electron radiation belt.
Denton, Michael H.   +2 more
core   +4 more sources

Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: The calm before the storm [PDF]

open access: yes, 2009
Measurements from seven spacecraft in geosynchronous orbit are analyzed to determine the decay rate of the number density of the outer electron radiation belt prior to the onset of high-speed-stream-driven geomagnetic storms.
Denton, Michael H.   +3 more
core   +5 more sources

Size-Dependent Errors in Real-Time Electron Density Propagation [PDF]

open access: yes, 2023
Real-time (RT) electron density propagation with time-dependent density functional theory (TDDFT) or Hartree-Fock (TDHF) is one of the most popular methods to model the charge transfer in molecules and materials. However, both RT-TDHF and RT-TDDFT within
Karnamohit, Ranka, Christine M., Isborn
core   +2 more sources

A Density Functional Theory for the Average Electron Energy [PDF]

open access: yes, 2022
A formally exact density functional theory (DFT) determination of the average electron energy is presented. Our theory, which is based on a different accounting of energy functional terms, partially solves one well known downside of conventional Kohn ...
Stefano, Racioppi   +3 more
core   +2 more sources

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

A SYNTHESIS OF TEMPORAL VARIATIONS IN DOPPLER SPECTRA RECORDED AT A QUASI-VERTICAL INCIDENCE BY THE HF DOPPLER RADAR WITH SPACED RECEIVERS [PDF]

open access: yesRadio Physics and Radio Astronomy, 2021
Purpose: The ionospheric channel is widely used for the communication, radio navigation, radar, direction finding, radio astronomy, and remote radio probing systems.
V. F. Pushin, L. F. Chernogor
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

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

First Observations of Mars Atmosphere and Ionosphere with Tianwen-1 Radio-Occultation Technique on 5 August 2021

open access: yesRemote Sensing, 2022
The radio-occultation technique can provide vertical profiles of planetary ionospheric and atmospheric parameters, which merit the planetary-climate and space-weather scientific research so far.
Xiong Hu   +23 more
doaj   +1 more source

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