نتایج جستجو برای: electron density

تعداد نتایج: 685167  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
ahmad irfan

ground state geometries have been computed using density functional theory (dft) at b3lyp/6-31g(d,p) level of theory. the excitation energies and spectroscopic parameters have been computed using long range corrected (lc) hybrid functional by time dependent density functional theory (tddft) with lc-blyp level of theory. the polarizable continuum model (pcm) has been used for evaluating bulk sol...

2007
P. Gnaciński J. K. Sikorski G. A. Galazutdinov

We have used the ionisation equilibrium equation to derive the electron density in in-terstellar clouds in the direction to 13 stars. A linear relation was found, that allows the determination of the electron density from the Mg I and Mg II column densities in interstel-lar medium. The comparison of normalised equivalent width of 12 DIBs with the electron density shows that the DIBs equivalent ...

2004
Frank Schreiber Alexander Gerlach

re = 2.818 × 10−15m is the classical electron radius, ρe is the electron density of the material, and μx is the absorption length. With δ > 0 we find that n < 1, which leads to the phenomenon of so-called total external reflection for incident angles αi below the critical angle αc = √ 2δ. Typical values for δ are 10−5 . . . 10−6, and thus αc is in the range of 0.1 ◦ . . . 0.5◦. For simplicity, ...

اکبرزاده, هادی, خسروی‌زاده, شکوفه, هاشمی‌فر, سیدجواد,

Topological analysis of the electronic charge density is introduced as a new tool for studying the electronic properties of the materials. In this method, the eigen values of the Hessian matrix of the electronic charge density as an scalar field are used to estimate the strength of the atomic bonds. We employ this method to study the half-metallic phase transition of MnAs in zinc blende structu...

Journal: :Acta Crystallographica Section A Foundations and Advances 2016

Journal: :Acta Crystallographica Section D Biological Crystallography 2004

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1981

Journal: :The journal of physical chemistry. A 2005
G V Gibbs D F Cox N L Ross T D Crawford R T Downs J B Burt

The electron localization function (ELF) and experimental and theoretical deformation electron density maps are compared for several earth materials and one representative molecule. The number and arrangement of the localized one-electron probability density domains generated in a mapping of the ELF correspond to the number and arrangement of the localized electron density domains generated in ...

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