Kasim Fawzy Ahmed

Kasim Fawzy Ahmed
Salahaddin University - Erbil | SUH

Ph.D. Material science

About

27
Publications
49,179
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103
Citations
Introduction
Kasim Fawzy Ahmed currently works at the Department of Physics, Salahaddin University - Erbil. Kasim does research in Materials Physics and Materials Science. Their current project is 'Judd-Ofelt analysis and radiative properties of Sm3+ doped Na2O-TeO2 Glasses.'
Additional affiliations
January 2015 - January 2016
Universiti Teknologi Malaysia
Position
  • Researcher
December 2002 - August 2005
Salahaddin University - Erbil
Position
  • Registrater
September 1997 - present
Salahaddin University - Erbil
Position
  • Luctural

Publications

Publications (27)
Article
Full-text available
In this paper the modification of optical absorption spectra characteristics of tellurite glasses doped by Sm3+ ions has been studied. Sodium-tellurite glasses have a composition (80-x) TeO2-20Na2O-xSm2O3 with concentration (x=0, 0.3, 0.6, 1, 1.2, 1.5) were synthesized by melt-quenching technique. The amorphous nature of the prepared glasses were c...
Article
Full-text available
In this paper the modification of optical absorption spectra characteristics of tellurite glasses doped by Sm 3+ ions has been studied. Sodium-tellurite glasses have a composition (80-x) TeO 2-20Na 2 O-xSm 2 O 3 with concentration (x=0, 0.3, 0.6, 1, 1.2, 1.5) were synthesized by melt-quenching technique. Physical and optical parameters are calculat...
Conference Paper
Full-text available
Series of glasses based on (70-x) TeO2 – 20Na2O – xSm2O3 (x=0, 0.3, 0.6, 1, 1.2, 1.5 mol%) have been prepared using melt-quenching technique. The nature of the glass has been confirmed using X-ray diffraction; it is found that the glass samples are amorphous in nature. The thermal stability of the glass has been determined by means of Differential...
Thesis
Full-text available
In this work, three groups of glass with composition the (70-x)TeO2-30ZnCl2-xNd2O3 as a doping process by the rare element of Nd3+, (70-2x)TeO2-30ZnCl2-xNd2O3-xEr2O3 as a co-doping process by the rare element REs of Nd3+ and Er3+ and (69.5-2.5x)TeO2-30ZnCl2-xNd2O3-xEr2O3-(0.5+0.5x)AgCl (where x=0, 1, 2 and 3mol%) as an embedding process with silver...
Article
Full-text available
Modifying the optical response of rare earth doped inorganic glasses for diverse optical applications is the current challenge in materials science and technology. We report the enhancement of the visible emissions of the Sm³⁺ ions doped sodium-tellurite (TNS) glasses. The impacts of varying Sm³⁺ ions concentration on the spectroscopic properties o...
Article
A series of samarium doped sodium tellurite glass embedded with gold nanoparticles (Au NPs) in the composition (79-x)TeO2−20Na2O-1Sm2O3-xAuCl3 (x=0, 0.2, 0.4, 0.6, 0.8, 1 mol%) are prepared using conventional melt quenching technique. The UV-Vis-NIR absorption spectra shows 9 bands corresponding to transition bands from ground state ⁶H5/2 to excite...
Data
A series of Silver Nanoparticles embedded in Neodymium/Erbium ions co-doped in the system of zinc-tellurite nanocomposites with the composition of (69.5-2.x)TeO2 – 30ZnCl2 – xNd2O3 – xEr2O3 – (0.5+0.5x) AgCl concentration from 0.0 to 3.0 mol% (x=0, 1, 2 and 3) have successfully been synthesized by melt-quenching techniques.. The amorphous nature of...
Presentation
Full-text available
Thermal Stability and Judd-Ofelt Analysis of Optical Properties of Sm3+-Doped Sodium Tellurite Glasses
Article
Full-text available
A series of Silver Nanoparticles embedded in Neodymium/Erbium ions co-doped in the system of zinc-tellurite nanocomposites with the composition of (69.5-2.x)TeO2 – 30ZnCl2 – xNd2O3 – xEr2O3 – (0.5+0.5x) AgCl concentration from 0.0 to 3.0 mol% (x=0, 1, 2 and 3) have successfully been synthesized by melt-quenching techniques.. The amorphous nature of...
Article
Full-text available
A B ST R AC T The influence of Sm +3 ions concentration doped sodium tellurite glasses on structural characterizationand thermal parameters have been investigated. Glass samples with molar composition (80-x) TeO 2-20Na 2 O-xSm 2 O 3 glasses (x=0, 0.3, 0.6, 1, 1.2, 1.5) are prepared by conventionalmelt quenching technique.Crystallization temperature...
Article
Full-text available
The Nd3+/Er3+ ions co-doped in the system of zinc-tellurite with the composition of (70-2x)TeO2-30ZnCl2-xNd2O3- xEr2O3 concentration from 1.0 to 3.0 mol% (x=1, 2 and 3) glasses were prepared by using conventional melt-quenching technique. The amorphous nature of the glass been confirmed by using X-RAY Diffraction Spectroscopy. Thermal characteristi...
Article
Full-text available
A series of Silver Nanoparticles embedded in the system of zinc-tellurite glass co-doped Neodymium/Erbium ions with the composition of (69.5-2.5x)TeO2–30ZnCl2–xNd2O3– xEr2O3–(0.5+0.5x)AgCl concentration from 0.0 to 3.0 mol% (x=0, 1, 2 and 3) have successfully been synthesized by melt-quenching techniques. The amorphous nature of the glass was confi...
Data
Full-text available
Neodymium/Erbium ions co-doped in the system of zinc-tellurite with the composition of (70-2x)TeO2-30ZnCl2-xNd2O3-xEr2O3 concentration from 1.0 to 3.0 mol% (x=1, 2 and 3) glasses were prepared by using conventional melt- quenching technique. The amorphous nature of the glass was confirmed from x- ray diffraction technique. The UV absorption spectra...
Article
Full-text available
Neodymium/Erbium ions co-doped in the system of zinc-tellurite with the composition of (70-2x)TeO2-30ZnCl2-xNd2O3-xEr2O3 concentration from 1.0 to 3.0 mol% (x=1, 2 and 3) glasses were prepared by using conventional melt-quenching technique. The amorphous nature of the glass was confirmed from x-ray diffraction technique. The UV absorption spectra r...
Conference Paper
Full-text available
Neodymium/Erbium ions co-doped in the system of zinc-tellurite with the composition of (70-2x)TeO2-30ZnCl2- xNd2O3-xEr2O3 concentration from 1.0 to 3.0 mol% (x=1, 2 and 3) glasses were prepared by using conventional melt-quenching technique. The amorphous nature of the glass was confirmed from x-ray diffraction technique. The UV absorption spectra...
Conference Paper
Full-text available
The effect of Sm3+ ions concentration doped TeO2-Na2O glasses on absorption and luminescence spectral parameters have been discussed. Glass samples with molar composition of (80-x) TeO2-20Na2O-xSm2O3 glasses (x=0, 0.3, 0.6, 1, 1.2, 1.5) are prepared by melt quenching technique and characterized through various techniques such as X-ray diffraction (...
Conference Paper
Full-text available
The effect of Sm3+ ions concentration doped TeO2-Na2O glasses on absorption and luminescence spectral parameters have been discussed. Glass samples with molar composition of (80- x) TeO2-20Na2O-xSm2O3 glasses (x=0, 0.3, 0.6, 1, 1.2, 1.5) are prepared by melt quenching technique and characterized through various techniques such as X-ray diffraction...
Article
Full-text available
The effect of Sm+3 ions concentration doped TeO2-Na2O glasses on structural and thermal parameters have been discussed. Glass samples with molar composition (80-x) TeO2-20Na2O-xSm2O3 glasses (x=0, 0.3, 0.6, 1, 1.2, 1.5) are prepared by melt quenching technique. Crystallization temperature (Tc), melting temperature (Tm) and glass transition temperat...
Article
Full-text available
A series of Silver Nanoparticles embedded in Neodymium/Erbium ions co-doped in the system of zinc-tellurite nanocomposites with the composition of (69.5-2.x)TeO2 – 30ZnCl2 – xNd2O–(0.5+0.5x) AgCl concentration from 0.0 to 3.0 mol% (x=0, 1, 2 and 3) have successfully been synthesized by melt-quenching techniques.. The amorphous nature of the glass w...
Article
Full-text available
Understanding optical properties of tellurite glasses modified and fabricated by controlling Nd3+ doping are promising for photonic applications. Neodymium doped zinc-tellurite glasses of composition (70-x)TeO2-30ZnCl2-xNd2O3 with concentration from 0.0 to 3.0 mol% (x=0, 1, 2 and 3) were prepared by using an ordinary melt-quench casting technique....
Data
Full-text available
The design and calculation elements of the single-anode magnetron injection gun (MIG) for 8mm has been studied by using particle in Cell (PIC) method. The Numerical calculation and optimization were achieved by employing the self-consistent electron trajectory code by using MATLAB software. The space charge effects and the velocity spreads were dis...
Article
Full-text available
According to the requirements of gyrotron traveling wave amplifier, a single-anode of electron gun designed. First, by adiabatic initial design parameters, such as the cathode angle, electron beam emission surface. Secondly, using electron been trajectory analysis program (EGUN) to determining the electron beam parameters. The results showed that t...

Questions

Questions (25)
Question
What are the most companies that sail rare-earth elements and they are trusted in their purity productions. Specially to buy their products from www.alibaba.com ?
Question
Why the rare-earth frontier is found in borderlands and hinterlands ?
Question
In EDX (EDS) element spectrum in KeV, there is a sentence below the figure say""Full Scale 1011 cts Cursor"
what dose the CTS meaning?
Question
In SEM, I heard that "The optimum condition for imaging is when the escape volume of the signal concerned equals to the pixel size", what dose that mean?
Question
Why in SEM, a dielectric specimen coated with a metallic? and why the metallic coating should be a carbon or gold?
Question
How one can make a furnace that work up to 1500oC and it is temperature level can be controlled?
Question
What is the different between the words spectroscopy and spectroscope?
for example, should we say Raman spectroscope OR Raman spectroscopy?
Question
When I work on UV-Vis-IR spectroscopy, I hear about 4 lamp source exchange sounds. So, How many lams inside UV-Vis-IR spectroscopy?

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Projects

Projects (3)
Project
we will try to prepare a (Samarium doped Sodium-Telluride glasses) based on a composition ratio of (79-x) TeO2-20Na2O-xSm2O3 (where x=0,0.3,0.6,1,1.3 and 1.5) by melt-quenching technique. then several technique will be use to improve thermal, structural and optical properties of these samples.