نتایج جستجو برای: electron density

تعداد نتایج: 685167  

Journal: :فیزیک زمین و فضا 0
علیرضا محمودیان institute of geophysics, university of tehran alireza mohebalhojeh institute of geophysics, university of tehran مجید مزرعه فراهانی institute of geophysics, university of tehran wayne scales the bradley department of electrical and computer engineering,virginia tech, usa

on the source of plasma density and electric field perturbations in pmse and pmwe regionspolar mesospheric summer/winter echoes (pmse/pmwe) are very strong radar echoes produced by ionospheric electron density fluctuations at half the radar wavelength. the main focus of this paper is the altitude range 80 to 90 km in summer and altitude range 65-86 km in winter in the polar mesosphere . this pa...

Journal: :journal of nanostructures 0
ali hashemizadeh department of physics, payame noor university, tehran, iran vahid mohammadi siavashi department of physics, payame noor university, tehran, iran

in present work, we have calculated the electronic properties including density of states (dos) and electron density for gan, inn and in wurtzite phase for x=0.5. the study is based on density functional theory (dft) with full potential linearized augmented plane wave method (fp-lapw) by generalized gradient approximation (gga-pbesol) for calculating electronic properties. in this report we con...

Journal: :Atmosphere 2023

Electron density (or electron concentration) is a critical metric for characterizing the ionosphere’s mobility. Shortwave technologies, remote sensing systems, and satellite communications—all rely on precise estimations of in ionosphere. Using profiles from FORMOSAT-3/COSMIC (Constellation Observation System Meteorology, Ionosphere, Climate) 2006 to 2013, four-dimensional physical grid model i...

Journal: :International Journal of Quantum Chemistry 1995

ژورنال: فیزیک زمین و فضا 2016

This paper describes the observation and analysis of vertical electron density before major earthquake above the Sumatra-Malaysia region during Indian Ocean major earthquake in 2004 in Aceh, Sumatra. The electron density profile in E-layer of ionosphere a few days before earthquake and a few hours after earthquake have been observed using the data from the CHAMP satellite. The data obtained fro...

E Abdolhosseini Sarsari, M Amirabbasi,

p { margin-bottom: 0.1in; direction: rtl; line-height: 120%; text-align: right; }a:link { color: rgb(0, 0, 255); } In this paper, the reported experimental data related to electrical transport properties in bulk ZnO, ZnMgO/ZnO and ZnMgO/ZnO/ZnMgO single and double heterostructures were analyzed quantitavely and the most important scattering parameters on controlling electron concentratio...

Journal: :journal of sciences islamic republic of iran 0

axial distributions of plasma and floating potentials, electron number density and the electron energy distribution function (eedf) have been measured in the double layer (dl) region of an he discharge constriction. excitation processes in the constriction region are studied. using a linearization method for the nonstationary balance equations and choosing appropriate discharge conditions, the ...

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