Do you want to publish a course? Click here

Quantum study of the electronic, spectral properties of some neutral and positive charged sodium clusters, using Density Functional Theory (DFT)

دراسة كوانتية للخصائص الإلكترونية و الطيفية لبعض عناقيد الصوديوم المعتدلة و الموجبة الشحنة باستخدام نظرية تابعية الكثافة (DFT)

912   0   12   0 ( 0 )
 Publication date 2017
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

In this research, we studied the quantum effect of the electronic density change effect of some sodium( Nan) clusters properties, electronic and spectral properties changes.We have been studied using density functional theory: (DFT/B3LYP(6-311+G(2d))). Density Functional Theory (DFT) is a computational method that derives properties of The sodium clusters (neutral and positively) based on a determination of the electron density of the clusters.

References used
R .G. Parr, W. Yang, Density Functional Theory of Atoms and Molecules, New York, , 1989
R. M. Kubba, K. A. Samawi, Comparison of Physical Properties, Energetic, Vibration Frequencies and Normal Coordinates, for Construction Units of Fullerene C60 Using Quantum Mechanical Calculations, Iraqi Journal of Science, Vol. 57, No.2C, pp:1333-1344, 2016
F. Shimojo, R. K. Kalia, A. Nakano, Linear-scaling densityfunctional- theory calculations of electronic structure based on real-space, Baton Rouge, LA 70803, USA, , 2001
rate research

Read More

The current research aims to study the effect of chemical disinfectants on the roughness and hardness of the surface of the cobalt chrome alloy, where the use of cleansing Sodium hypochlorite 5.25% and distilled water (the control sample), Been ma nufacturing 20 structure metal of the alloy cobalt chrome, each group containing 10 samples and was doused with samples intravenously cleared, then it was measured surface roughness using an Atomic force microscope, and measuring the hardness of the surface using a Vickers measuring device hardness.
Theoretical calculations using density functional theory (DFT) both on semi empirical and Ab initio levels have been carried out for pyrromethene laser dye and related compounds (PM-chromophore, PM-4m, PM 546, PM650 PM 567 and PM597). We carried o ut theoretical calculations using DFT, AM1, TDDFT and CIS on ground and excited states for the selected laser dye materials, we obtained the optimized geometry of the molecules, UV, IR spectrum, and the transition between the ground S0 and the first excited S1 states exclusively, the HOMO and LUMO states and other properties.
Tow compounds have been synthesised: tetra butyl ammonium alginate and dodecanoate sodium alginate ester. The synthesis of compound (1) by transferring sodium alginate to Alginic acid and then adjusted by tetra-butyl ammonium hydroxide. The comp ound (2) was synthesised from tetra-butyl ammonium alginate according to Fisherest erification, between tetra-butylammonium alginate and dodecanoic acid and using (Amberlyst-15) as a hetrogeneous acid catalyst, and then the product react with sodium carbonate.
In this search, it has been studied the properties of the magnetoacoustic soliton waves in ultra dense quantum plasma and its including ions and electrons and positrons after taking quantum effects of electrons and positrons into consideration due to their Fermionic nature and the quantum diffraction, this is by the quantum Bom potential into two momentum equations of electrons and positrons . It has been studied the solitary waves of small amplitude by using reductive perturbation method. The results have been compared to the solitary waves ones with what others have reached in related references.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا