Results 11 to 20 of about 4,920,547 (298)

Electron Density Distribution in Organometallic Materials [PDF]

CHIMIA, 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]

, 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., Cayton, T. E., Borovsky, J. E.   +2 more
core   +4 more sources

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

, 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, Martin, Rahm, Per, Hyldgaard, Phalgun, Lolur, Stefano Racioppi, Martin Rahm, Per Hyldgaard, Phalgun Lolur   +7 more
core   +2 more sources

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

, 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, Christine M. Isborn, Karnamohit Ranka   +3 more
core   +2 more sources

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

Applied 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, Günter Forster, Jose-Luis Marques-Lopez, Jochen Schein   +3 more
doaj   +1 more source

Electron density profile modeling

Annals 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, M. Mosert de Gonzalez, R. G. Ezquer   +2 more
doaj   +1 more source

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

Remote 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, Xiaocheng Wu, Shuli Song, Maoli Ma, Weili Zhou, Qingchen Xu, Lei Li, Cunying Xiao, Xie Li, Chi Wang, Qinghui Liu, Lue Chen, Guangming Chen, Jianfeng Cao, Mei Wang, Peijia Li, Zhanghu Chu, Bo Xia, Junfeng Yang, Cui Tu, Dan Liu, Simin Zhang, Quan Zhang, Zheng Li   +23 more
doaj   +1 more source

The Electron Density: A Fidelity Witness for Quantum Computation [PDF]

, 2023
There is currently no combination of quantum hardware and algorithms that can provide an advantage over conventional calculations of molecules or materials.
Werner, Dobrautz, Janka, Biznárová, Amr, Osman, Giovanna, Tancredi, Martin, Rahm, Mårten , Skogh, Christopher , Warren, Phalgun, Lolur, Jonas, Bylander   +8 more
core   +2 more sources

Seismo-Ionospheric Effects Prior to Two Earthquakes in Taiwan Detected by the China Seismo-Electromagnetic Satellite

Atmosphere, 2022
In this paper, we focused on the characteristics of the seismo-ionospheric effects related to two successive earthquakes, namely, the earthquakes in 2022 in Taitung Sea, Taiwan, China, with magnitudes (M) of 6.7 and 6.3, at 23.45° N, 121.55° E and 23.39°
Yufan Guo, Xuemin Zhang, Jiang Liu, Muping Yang, Xing Yang, Xiaohui Du, Jian Lü, Jian Xiao   +7 more
doaj   +1 more source

Modeling the Plasma Frequency for F2-Region Using Modified Chapman Function and NeQuick2 Model over Different Geographical Locations and Months [PDF]

Engineering and Technology Journal, 2019
This study aims to modeling the plasma frequency profile of the F2 region as a function of geographical location and month of the y ear. The most important model and function used are Chapman function and NeQuick 2 model which have been defined both by ...
Ali Nima
doaj   +1 more source