نتایج جستجو برای: total electron density

تعداد نتایج: 1429870  

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...

1997
M. Koskinen M. Manninen S. M. Reimann Niels Bohr

Spin density functional theory is used to calculate the ground state electronic structures of circular parabolic quantum dots. We find that such dots either have a spin configuration determined by Hund’s rule or make a spin-density-wave-like state with zero total spin. The dependence of the spin-density-wave amplitudes on the density of the two-dimensional electron gas is studied. [S00319007(97...

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 ...

Journal: :Journal of Physics: Condensed Matter 2021

Density-functional theory requires an extra variable besides the electron density in order to properly incorporate magnetic-field effects. In a time-dependent setting, gauge-invariant, total current takes that role. A peculiar feature of static ground-state setting is, however, gauge-dependent paramagnetic appears as additional instead. An alternative, exact reformulation terms has long been so...

2010
Donghyung Lee Kieron Burke

There has been a long discussion about the reliability of approximate density functionals for atomic anions. It is well known that the extra electron produces a strong self-interaction error, so strong that the extra electron is unbound. Despite this, electron affinities have been calculated using finite basis sets and very good results have been reported by Schaefer and others. We recently sug...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2005

2012
Kin Fai Mak Keliang He Changgu Lee Gwan Hyoung Lee James Hone Tony F. Heinz Jie Shan

S1. Estimate of the interaction parameter !! in monolayer MoS2 The electron interaction strength in a two-dimensional electron gas (2DEG) system is characterized by the dimensionless parameter !!, which measures the average interparticle separation in units of the effective Bohr radius. The parameter can also be considered to be the ratio of the average Coulomb potential energy to the average k...

2010
Thomas C. Terwilliger

A method for the rapid tracing of polypeptide backbones has been developed. The method creates an approximate chain tracing that is useful for visual evaluation of whether a structure has been solved and for use in scoring the quality of electron-density maps. The essence of the method is to (i) sample candidate C(alpha) positions at spacings of approximately 0.6 A along ridgelines of high elec...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1981

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