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.

Loading...
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: 2005 volume:1 issue:3

Article
Monte Carlo Simulation of Electronic Kinetics in Gas Discharge

Authors: A.B. Kadhem --- B.H. Hamad
Pages: 3-5
Loading...
Loading...
Abstract

The phenomenon of electrical gas discharge is present in many applications of plasma physics. Calculation of electrons motion tracing in gases are described. The backscattering probability of electrons to the cathode has been estimated for values of E/P0 ratio from 10 to 200 V.cm-1.torr-1 and for emission energies up to the lowest excitation potential. The primary ionization coefficients and drift velocities were evaluated for values of E/P0 ratio from 20 to 400 V.cm-1.torr-1. The equilibrium of swarm with the field was considered in detail. It is shown that for uniform fields, deviations from exponential growth of current with increasing electrode separation occur if the interelectrode voltage is not at least three times the mean energy of electrons impinging on the anode.


Article
Investigation of Amorphous to Crystalline Transition in Glassy Se80Te20 and Se70Te20M10 (M = Ag, Cd, Sb) Alloys

Authors: N. Mehta --- A. Kumar
Pages: 7-13
Loading...
Loading...
Abstract

Calorimetric measurements have been performed in binary Se80Te20 and ternary Se70Te20M10 (M=Ag, Cd, Sb) alloys to study the effect of metallic additives (Ag, Cd, Sb) on the crystallization kinetics in Se80Te20 alloy. Three different non-isothermal methods Kissinger’s method, Matusita-Sakka theory and Augis-Bennett approximation method have been used in the present study. Different kinetic parameters such as the activation energy of crystallization (EC), the order parameter (n), the growth morphology parameter (m), the rate constant (K) and its frequency factor (Ko) have been determined. The effect of third element on crystallization temperature of binary Se80Te20 is explained in terms of Arrhenius dependence of rate constant K(T). The increasing sequence of activation energy of crystallization in ternary Se70Te20M10 (M=Ag, Cd, Sb) alloys is explained in terms of their average bond strength.


Article
Classification of Digital Modulation Using Wavelet Transform

Authors: A.J.K. Humady --- H.K. Chaiel
Pages: 15-21
Loading...
Loading...
Abstract

Many methods were presented for classification of digital modulation; these methods either deal with the received (modulated) or the baseband signals. To reduce the classifier complexity, the first type is used. Discrete Fourier Transforms (DFT) or Fast Fourier Transforms (FFT) of the received signal may be used for such purpose. However, the drawback of this method is the time, which required for completing the operation, is proportional to the number of samples used for classification. In this work, a proposed classifier based on wavelet filters is used instead of the FFT classifier. Computer simulation tests show that the Haar wavelet filter is the most suitable type as compared with other types of wavelet filters. Extra tests show that the wavelet classifier has the same performance but it classify signals with bit rate higher than that of FFT classifier.


Article
Annealing Effect on the Photoluminescence of CdTe/CdSe Thin Film Photovoltaic Devices

Authors: A.C. de Graev --- G. Manterick
Pages: 23-25
Loading...
Loading...
Abstract

The depth dependence of photoluminescence from as grown and CdCl2 treated polycrystalline CdSe/CdTe solar cells has been compared using a bevel etch technique. It has been found that the three emission bands observed at 1.59eV, 1.55eV and 1.45eV all became more intense after the treatment, with the emission at 1.55eV near the CdSe/CdTe interface being the most affected.


Article
New High Angular Resolution Detection System for Direction Recognition

Authors: H.H. Habib --- W.K. Hamoudi --- R.A. Ismail
Pages: 27-32
Loading...
Loading...
Abstract

A digital angular resolution detection device using linear detector arrays has been designed and fabricated in two models; with accuracy better than (r1q) and (r2q) respectively. The principle of operation is based on encoding the radiation angle of arrival by using a code mask based on random fractal generation.

Table of content: volume: issue: