Table of content

Iraqi Journal of Applied Physics Letters

الرسائل العراقية في الفيزياء التطبيقية

ISSN: 1999656X
Publisher: iraqi society for alternative and renewable energy sources and techniques
Faculty:
Language: English

This journal is Open Access

About

Iraqi Journal of Applied Physics (IJAPLett) is a scientific periodical sponsored and
published by the Iraqi Society for Alternative and Renewable Energy Sources and
Techniques (I.S.A.R.E.S.T.). The Editorial Board is responsible for the scientific content
and other editorial matters relating to the Journal. Manuscripts submitted are first screened
by the editors; those on subject matters within the scope of the IJAPLett are sent to an
expert referee for evaluation and may be sent to a second reviewer if necessary. This
screening process helps to assure an appropriate focus as well as high scientific quality of
the Journal. The IJAPLett welcomes submission of papers and letters in applied physics
and related fields of science, engineering and technology. They should have something in
common with what we now publish on inanimate materials and processes therein:
structures, transport, physical, electrical, dielectric, magnetic, and optical properties. Our
basic criterion stated below will continue to apply: papers must contain science, especially
physics, and there must be an application. We advise authors submitting papers to suggest
the names of at least two possible reviewers, with full information on addresses, phone and
e-mail. Suggestions of reviewers are welcome regardless of the subject.

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Contact info

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

Table of content: 2008 volume:1 issue:2

Article
The Fundamentals of Plasma-Assisted CVD Technique Employed in Thin Films Production

Authors: O.A. Hamadi
Pages: 3-8
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Abstract

This paper reviews the physical and chemical principles of plasma-assisted chemical vapor deposition (CVD) technique for thin films. We focus on the integration, process, and reliability requirements for dielectric films used for isolation, passivation, barrier, and antireflective-coating applications in ultra-large-scale integrated (ULSI) semiconductor circuits.


Article
Using Longitudinal Surface Acoustic Waves for Non-Destructive Testing of Inner Surfaces

Authors: K.F. Alzubaidi --- A.M. Altaiee --- R.A. Hameed
Pages: 9-13
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Abstract

In this paper, experimental results of nondestructive ultrasonic testing using longitudinal surface waves (LSAW) were presented. Analysis of real LSAW signals, generated and received by angle transducers, was performed and causes of lateral interference were investigated, optimal angle transducer constructions were offered. Real angle transducer parameters and levels of LSAW signals, reflected from artificial defects in duralumin sample, were evaluated. It was concluded by experimental investigations that LSAW signal magnitude and collateral interference level ratio reaches 24dB. This gives opportunity to perform sufficiently reliable shell product inner surface nondestructive testing using secondary longitudinal surface waves.


Article
Comparative Evaluation of Bit Error Rate in Frequency Selective Fading Channels Employed in Wavelet Modulation

Authors: S.S. Jassem
Pages: 14-19
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Abstract

In this work, results of a comparison modeling treatment of additive white Gaussian noise and two-ray fading channel those affecting the performance of modulation techniques employed in modern communications systems, were presented. The channel parameters were varied to obtain a frequency-selective channel, which was observed by determining the bit error rate as a function of the ratio of signal energy per bit to thermal noise power per Hz. This treatment introduces the performance of wavelet modulation employing such systems.


Article
Densification Behavior and Dielectric Properties of Low-Temperature Corderite Ceramics

Authors: H.J. Hameed --- A.M. Jasim
Pages: 20-22
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Abstract

The cordierite ceramics were prepared from the waste of porous ceramics then the densification behavior and dielectric properties of cordierite ceramics adding three different proportions of CaO–B2O3 glass were investigated. Their crystalline phases, densification parameters, dielectric properties were introduced. The densities of all samples firstly increased and then decreased. The crystalline phase of samples was cordierite. The materials had a low dielectric constant and a low dielectric loss [~5, tan ~ (2-3) x10-3, at about 10GHz]. The best properties were obtained for the sample with 15 wt% CaO–B2O3 glass added and sintered at 1020°C.


Article
Optoelectronic Characteristics of As-doped Silicon Photodetectors Produced by LID Technique

Authors: A.A. Hadi --- O.A. Hamadi
Pages: 23-26
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Abstract

In this work, optoelectronics characteristics of arsenic-doped silicon photodetectors produced by laser-induced diffusion technique were introduced. Results explained that the parameters of the photodetectors depend on laser energy and substrate temperature. Maximum Responsivity was obtained for the photodetectors prepared by laser fluence of 9.08J/cm2 at substrate temperature of 598K. The pulse response waveform of photodetectors illustrated that the rise time is not dominated by RC. Non-linearity deviation coefficient was improved by factors 2.1 for As-doped Si photodetectors when substrate temperature is raised from 300K to 598K.


Article
Electrical Properties of Cu2O Films Prepared by Electro-Deposition Method

Authors: M.I. Ali --- S.M. Jasim --- Q.A. Sabbar
Pages: 27-29
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Abstract

In this work, the electrical properties of electrodeposited Cu2O in aqueous solutions were investigated. The results explained good stability under illumination conditions at negative potentials. The diffusion length of electrons in the sample was determined to be about 10-100nm. The deposited Cu2O films could be a promising material in electrochemical photovoltaic cells technology.

Table of content: volume:1 issue:2