Table of content

Iraqi Journal of Applied Physics

المجلة العراقية للفيزياء التطبيقية

ISSN: 18132065 23091673
Publisher: iraqi society for alternative and renewable energy sources and techniques
Faculty:
Language: English

This journal is Open Access

About

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, Computers Networks and Applications.

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Contact info

P. O. Box 55259,
Baghdad 12001,
Iraq
Website: www.iraqiphysicsjournal.com
Email: admin@iraqiphysicsjournal.com
Email: editor_ijap@yahoo.co.uk

Table of content: 2016 volume:12 issue:2

Article
Iraqi Journal of Applied Physics
المجلة العراقية للفيزياء التطبيقية

Authors: Editorial Board
Pages: 1-1
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Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, and Computers and Networks.


Article
Instructions for Authors
تعليمات للمؤلفين

Authors: Editorial Board
Pages: 2-2
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Abstract

Contributions to be published in this journal should be original research works, i.e., those not already published or submitted for publication elsewhere, individual papers or letters to editor. Manuscripts should be submitted to the editor at the mailing address: Iraqi Journal of Applied Physics, Editorial Board, P. O. Box 55259, Baghdad 12001, IRAQ Website: www.iraqiphysicsjournal.com Email: editor@iraqiphysicsjournal.com, editor_ijap@yahoo.co.uk


Article
Fluorescence Energy Transfer Characteristics in Binary Acriflavine-Red Nut Lasing Dye Mixtures

Authors: Mohammed A. Hameed --- Sajjad A. Akif
Pages: 3-8
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Abstract

In this work, the energy transfer characteristics in binary lasing dye mixtures were studied by the measurements of fluorescence spectra using two different techniques at room and low temperatures. The binary lasing dye mixtures were made from acriflavine (donor) and red nut (accepter) dyes dissolved in two different solvents at different concentrations. These characteristics were determined throughout the variation of some related parameters, such as the fluorescence intensities of donor in the absence and the presence of acceptor (ID/IDA), the half quenching concentration (A1/2) and the critical transfer distance (R0), with accepter (red nut) concentration at different concentrations of prepared solutions. Results showed that both ID/IDA and R0 increased with acceptor concentration while A1/2 decreased with increasing acceptor concentration. Also, the monomer sample in ethanol exhibited higher values of all three parameters (ID/IDA, R0 and A1/2) with respect to those obtained from monomer in methanol at certain concentration. The minimum value of R0 was measured in 10-5 M/L monomer sample in methanol at accepter concentration of 10-5 ml.


Article
Characterization of SiC/Si Heterojunction Fabricated by Plasma-Induced Growth of Nanostructured Silicon Carbide Layer on Silicon Surface

Authors: Oday A. Hammadi
Pages: 9-13
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Abstract

In this work, p-type silicon substrates were etched by plasma-induced etching technique to form nano-scale rough surfaces. These surfaces were coated with ultra-fine graphite paste as a source of carbon to form layers of n-type silicon carbide by plasma-induced bonding technique. The plasma used for this purpose was generated by glow discharge of argon at 0.15 mbar and discharge power of 157.5W. The structures and morphology of these structures were introduced by x-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). These tests confirmed the formation of nanostructured SiC layers on the etched Si substrates. Electrical characteristics showed that the formed n-SiC/p-Si anisotype heterojunction has an ideality factor of 0.45 and the built-in potential was measured to be 2.6V. This technique is reasonably efficient, low-cost and reliable to fabricate heterojunctions from nanostructured compound semiconductors on silicon substrates.


Article
International Conference on Advances in Radiation Oncology (ICARO-2)

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Abstract

The International Atomic Energy Agency (IAEA) is organizing the second International Conference on Advances in Radiation Oncology (ICARO-2), following the success of the first conference (ICARO-1), which was held in 2009. The advances in radiotherapy in the last years have been striking, although numerous challenges are still to be faced, including achieving access to high standard cancer care in many countries. New radiotherapy techniques have been implemented in the past decade, including three-dimensional conformal therapy, stereotactic radiotherapy, intensity modulated radiation therapy, image guided radiation therapy, tomotherapy, new brachytherapy and unsealed-source techniques, and proton and heavy ion therapy. The increased use of these complex techniques, coupled with the need to treat more patients in less time, will continue to drive a reliance on high-end technologies and impose a financial burden on health care programmes. In addition, the development and implementation of a quality assurance programme for these new techniques is a major challenge in Member States.

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Article
Microhardness of Nanostructured SixN1-x Thin Films Prepared by Reactive Magnetron Sputtering

Authors: Ahmed A. Anber --- Firas Kadhim
Pages: 15-19
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Abstract

Nanostructured silicon nitride (SixN1-x) thin films were prepared by reactive magnetron sputtering using Ar/N2 gas mixture of 1:1. The structures and fractional compositions of the prepared samples were determined by x-ray diffraction (XRD) and electron-dispersion x-ray diffraction (EDS) patterns as functions of inter-electrode distance. They showed that the prepared films were polycrystalline and the partial amount of silicon (x) is ranging in 0.825-0.865 as the inter-electrode distance was ranging in 2.5-7.5cm. The particle sizes of the prepared nanostructured were determined by the field-effect scanning electron microscopy (FE-SEM) to be about 38nm. Also, the highest value of the surface roughness of the prepared nanostructures was determined by the atomic force microscopy (AFM) and found to increase with increasing inter-electrode distance to be 29.00nm for the samples prepared at 7.5cm. The measured Vickers microhardness of the prepared films showed relatively high values (570-750) and was decreased with decreasing film thickness, which is inversely proportional to the inter-electrode distance. However, no uniform relation between the microhardness and fractional composition of the prepared sample was observed.


Article
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI, 28 January–2 February 2017

Authors: Alexandre Freundlich
Pages: 20-20
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Abstract

This conference attempts to capture basic research and breakthroughs in the application of photonic/novel device architectures and the development of advanced modeling and simulation techniques to feed the innovation pipeline leading to revolutionary and practically viable high-efficiency photovoltaic (PV) technologies. The conference also aims at providing an interdisciplinary forum to enhance interactions between physicists, photonic engineers and photovoltaic device specialists at both the experimental and theoretical levels.


Article
Fabrication of Carbon Nanotube/Titanium Dioxide Nanocomposite Photocatalyst Using Sol-Gel Method

Authors: Duha S. Ahmed --- Ali L. Abed --- Ghaed K. Salman
Pages: 21-24
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Abstract

In this work, functionalized multi-walls carbon nanotubes (FMWCNTs) were prepared and mixed with titanium dioxide nanoparticles by sol-gel chemical method using titanium tetrachloride (TiCl4) as a source. A cretin amount of MWCNTs were soaked in a mixture of 0.2ml TiCl4 and 0.1ml HCl forming MWNTs/TiO2 nanocomposite as efficient photocatalytic material. Characterization and measurements on the prepared samples before and after adding TiO2 include x-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The results reveal deposition TiO2NPs on FMWCNTs surface after leaving soaking in mixture of TiCl4 for 24h and that caused to fill the MWCNTs with TiO2 NPs and decorating surface of MWCNTs resulting in formation MWNTs/TiO2 nanocomposites.


Article

Article
Theoretical Treatment to Determine the Quality of Photonic Crystal Fiber (PCF) as a Function of the Number of Air Holes

Authors: Rana M. Taha --- Fayroz A. Sabah
Pages: 31-35
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Abstract

In this paper, the design of photonic crystal fiber (PCF) depending on the number of holes and rings is presented. Three different types of PCF will be assumed. The effect of increasing number of holes was explained using the relations between chromatic dispersion (Dc), loss, bit error rate (BER) and pitch (ᴧ) for wavelength interval 1-2μm and three fiber lengths (50, 100 and 200 km). These relations were plotted using MATLAB-2008 software. The obtained results showed that the 3rd PCF with the highest number of holes has provided better quality than the other two types of PCF.


Article
The Effect of Some Experimental Parameters on the Properties of Porous Silicon

Authors: Adawiya J. Haider
Pages: 37-40
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Abstract

The influence of halogen lamp illumination intensity and HF acid concentrations on the properties of n-type porous silicon samples during the light-induced etching process were investigated. The photoluminescence (PL) spectra were recorded for porous silicon samples prepared at high illumination intensity. The peak and the shape of PL spectra are function to illumination intensities. The etching rates and porosities increases with increasing light beam intensity and go through maximum with increasing HF acid concentration.

Table of content: volume:12 issue:2