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Iraqi Journal of Physics University of Baghdad-College of Science
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ISSN: 2070-4003
eISSN: 2664-5548
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No. of publications: 869
No. of views: 558661
No. of Crossref citations: 678
Publication Date
Sat Mar 01 2008
Journal Name
Iraqi Journal Of Physics
Effect of Nd-YAG, XeCl, and Nitrogen Laser Radiation on Human Aorta , and Some Arterial Tissues
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The effect of laser radiation on human aorta, coronary, and pulmonary arteries, and pulmonary veins has been investigated. Xenon-Chloride (eximer), Nitrogen, and Nd-YAG pulsed lasers of wavelengths 308, 337, and 1060 nm respectively were used. Their effects on fresh postmortem tissues, normal and diseased, was studied. The diameter and depth of ablation of the exposed tissues, in air, were measured as a function of many factors related to the type of laser and nature of the tissue. The effect of properties of the applied lasers, such as average power density and deposited energy density, on the exposed tissue surface were studied. The increase of these two parameters cause an increase in the depth and diameter of ablation. However the di

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Publication Date
Fri Dec 01 2023
Journal Name
Iraqi Journal Of Physics
Structural and Magnetic Properties of MnxZn1-xFe2O4 Prepared via Sol-Gel Method
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      Manganese-zinc ferrite MnxZn1-xFe2O4 (MnZnF) powder was prepared using the sol-gel method. The morphological, structural, and magnetic properties of MnZnF powder were studied using X-ray diffraction (XRD), atomic force microscopy (AFM), energy dispersive X-ray (EDX), field emission-scanning electron microscopes (FE-SEM), and vibrating sample magnetometers (VSM). The XRD results showed that the MnxZn1-xFe2O4 that was formed had a trigonal crystalline structure. AFM results showed that the average diameter of Manganese-Zinc Ferrite is 55.35 nm, indicating that the sample has a nanostructure dimension. The EDX spectrum revealed the presence of transition metals (Mn, Fe, Zn, and O) in Mang

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Publication Date
Tue Sep 11 2018
Journal Name
Iraqi Journal Of Physics
Measurement of Percentage Depth Dose (PDD) for 6 MeV in water phantom and homogenous actual planning
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Radiotherapy is the branch of clinical medicine concerned with the application of ionizing radiation in the treatment of disease. And it is used to killing of cancer cells in a tissue using ionizing radiation while keeping the sparing of healthy cells at acceptable level. X-ray beams are used to deposit absorbed dose at depth within a patient at the site of the tumor. The aim of this work is studying the relationship between the depth dose and the field size in water phantom and homogenous actual planning. In our work, the dose distribution at different depths (zero-18 cm) deep at1cm interval treated with field size (10×10 and 20×20) cm2 were studied.
Results show that high similarity between water phantom and actual planning for th

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Publication Date
Sun Feb 24 2019
Journal Name
Iraqi Journal Of Physics
High spatial resolution digital elevation model (DEM) production using different interpolations techniques
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DEMs, thus, simply regular grids of elevation measurements over the land surface.The aim of the present work is to produce high resolution DEM for certain investigated region (i.e. Baghdad University Campus\ college of science). The easting and northing of 90 locations, including the ground-base and buildings of the studied area, have been obtained by field survey using global positioning system (GPS). The image of the investigated area has been extracted from Quick-Bird satellite sensor (with spatial resolution of 0.6 m). It has been geo-referenced and rectified  using 1st order polynomial transformation. many interpolation methods have been used to estimate the elevation such as ordinary Kriging, inverse distance weight

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Publication Date
Sat Mar 01 2008
Journal Name
Iraqi Journal Of Physics
Influences of the Cu Substitution at Hg Site in Hg1 - xCuxBa2Ca2Cu3O8+δ Superconductors
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The influences of the Cu substitution at Hg site in the HgOd layer, upon the
microstructure, Tc and oxygen content of Hg-1223 have been investigated. High
temperature superconductor with a nominal composition Hg1-xCuxBa2Ca2Cu3O8 + δ for
Cu ( 0 £ x £ 0.5) have been prepared by the two-steps solid state reaction method
under optimum conditions. XRD showed a tetragonal structure with a high ratio of
Hg-1223 superconductor phase. Tc enhancement has been determined with the Cu
concentration was is found to be Tc = 153 K for x = 0.3, while the oxygen content
observed variously with Cu concentration. Hg1-xCuxBa2Ca2Cu3O8+δ structure, oxygen
content and Tc behavior have been discussed.

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Publication Date
Fri Oct 01 2010
Journal Name
Iraqi Journal Of Physics
Effect of Carbon Black and Water Absorption on Dielectric behavior of EP-modified SiO2 composites
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Epoxy (EP) – Silica (SiO2) composites are well known composites used in microelectronic industry . So it is important to study their dielectric behavior under different conditions such as
the presence carbon black (UV absorber) and immersion in the water for 30 days .
Dielectric properties were calculated over the frequency range 102 – 106 Hz for epoxy composites with different weight % of micrometer 1.5μm SiO2 particles (60%, 65% and 70wt%) modified with 0.5wt% silane coupling agent to improve adhesion between EP and SiO2 phases .

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Publication Date
Sat Dec 01 2012
Journal Name
Iraqi Journal Of Physics
Fabrication of carbon nanopowder by arc discharge technique
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Carbon Nanopowder was fabricated by arc discharge technique at deposition pressure of 10-5 mbar Argon gas on glass substrates. The prepared carbon nano- powder was collected from chamber and purified with nitric acid at 323K .The morphology and crystalline structure of the prepared powder was examined by X-Ray Diffraction (XRD), Atomic Force Microscope (AFM), and Scanning Electron Microscope (SEM). XRD spectrums showed that the powder exhibits amorphous structure and after purification, the powder showed hexagonal structure with a preferential orientation along(002) direction ,where AFM and SEM gave very compatible estimation on the grain size and shape of the nanopowder.

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Publication Date
Wed Dec 01 2010
Journal Name
Iraqi Journal Of Physics
Partial Level Densities for Neutron Induced Pre-equilibrium Nuclear Reactions
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The state and partial level densities were calculated using the corresponding formulas that are obtained in the frame work of the exciton model with equidistant spacing model (ESM) and non-ESM (NESM). Different corrections have been considered, which are obtained from other nuclear principles or models. These corrections are Pauli Exclusion Principle, surface effect, pairing effect, back shift due to shell effect and bound state effect . They are combined together in a composite formula with the intention to reach the final formula. One-component system at energies less than 100 MeV and mass number range (50-200) is assumed in the present work. It was found that Williams, plus spin formula is the most effective approach to the composite

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Publication Date
Mon Oct 01 2012
Journal Name
Iraqi Journal Of Physics
study Preparation and characterization ZnO nanoparticles and study of morphology at high temperature
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In context of this paper we prepare high purity powder ZnO nanostructures by chemical method at low temperature solution and study the effect off annealing at high temperature, ZnO nanoparticles have been successfully synthesized by chemical method at 0Cᵒ solution. In this method, suddenly reaction is occurred between zinc acetate solution and sodium hydroxide solution at 0Cᵒ, annealing temperature of powder product surfactant plays an important role in morphological changes. The nanostructures have been characterized by X-ray diffraction (XRD), Scanning Electron Microscope (SEM), differential scanning calorimetry(DSC) and UV-visible .analysis Effect of annealing temperatures on the morphology , structure and optical properties is di

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Publication Date
Tue Jan 08 2019
Journal Name
Iraqi Journal Of Physics
Study of structural, optical and electrical properties of thin Ag2Cu2O4 films prepared by pulsed laser deposition
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The influence of sintering and annealing temperatures on the structural, surface morphology, and optical properties of Ag2Cu2O4 thin films which deposited on glass substrates by pulsed laser deposition method have been studied. Ag2Cu2O4 powders have polycrystalline structure, and the Ag2Cu2O4 phase was appear as low intensity peak at 35.57o which correspond the reflection from (110) plane. Scan electron microscopy images of Ag2Cu2O4 powder has been showed agglomerate of oxide particles with platelets shape. The structure of thin films has been improved with annealing temperature. Atomic Force micrographs of Ag2Cu2O4 films showed uniform, homogenous films and the shape of grains was almost spherical and larger grain size of 97.85 nm has o

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Publication Date
Thu Sep 01 2022
Journal Name
Iraqi Journal Of Physics
Positron Interactions with Some Human Body Organs Using Monte Carlo Probability Method
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In this study, mean free path and positron elastic-inelastic scattering are modeled for the elements hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (S), chlorine (Cl), potassium (K) and iodine (I). Despite the enormous amounts of data required, the Monte Carlo (MC) method was applied, allowing for a very accurate simulation of positron interaction collisions in live cells. Here, the MC simulation of the interaction of positrons was reported with breast, liver, and thyroid at normal incidence angles, with energies ranging from 45 eV to 0.2 MeV. The model provides a straightforward analytic formula for the random sampling of positron scattering. ICRU44 was used to compile the elemental composition data. In this

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Publication Date
Sun Jan 13 2019
Journal Name
Iraqi Journal Of Physics
Inelastic transverse magnetic dipole electron scattering form factors in 48Ca (restricted optimum configurations)
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Inelastic transverse magnetic dipole electron scattering form
factors in 48Ca have been investigated through nuclear shell model
in an excited state energy Ex= 10.23 MeV which is so called
"mystery case" with different optional choices like effective
interaction, restricted occupation and core polarization interaction.
40Ca as an inert core will be adopted and four orbits with eight
particles distributed mainly in 2p1f model space and in some extend
restricted to make sure about the major accuse about this type of
transition. Theoretical results have been constituted mainly with
experimental data and compared with some important theoretical
results of the same transition.

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Publication Date
Sun Dec 01 2002
Journal Name
Iraqi Journal Of Physics
Effect of the electric field on drilling Brass by Laser
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The research include a pulsed Nd: YAG Laser with (300µs) pulse duration in the TEM00 mode at (1.06µm) wavelength for energies between (0.5-3) J was employed to drill Brass material which is use in industrial applications. The process of drill was assisted by an electric field. This resulted in an increase in the hole aspect ratio by the value (45%) and decrease in the hole taper by the value (25%) of its value under ordinary drilling conditions using the same input energy.

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Publication Date
Mon Jun 01 2020
Journal Name
Iraqi Journal Of Physics
Optical and structural properties of synthesized ZnO nanorods through chemical bath deposition on various substrates
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Chemical bath deposition was used to synthesize ZnO nanorods (NRs) on glass and fluorine_doped tin oxide (FTO) substrates. X-ray diffraction was performed to examine the crystallinity of ZnO nanorod. Results showed that ZnO NRs had a wurtzite crystal structure. Field emission scanning electron microscopy images showed that glass sample had rod-like structure distribution with (50 nm) diameter and average length of approximately (700 nm), whereas the FTO-coated glass sample had 25 nm diameter and average length of approximately 950 nm. The direct optical transition band gaps of the glass and FTO_coated glass samples were( 4 and 4.43 eV), respectively. The structural and optical properties of the synthesized ZnO p

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Publication Date
Fri Nov 29 2019
Journal Name
Iraqi Journal Of Physics
Elastic Electron-Palladium Scattering
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توزيعات كثافة البروتون (PDD)، خلافاتهم وتناثر الإلكترون مرنة عوامل الشكل، F (ف) من ارض الدولة لبعض نوى قذيفة، مثل ( 104 المشتريات، 106

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Study of Some Structural and Optical Properties for Synthesized Graphene/Polyaniline/Zns Nanocomposite
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Hybrid graphene (GR)/ polyaniline (PANI) based composites incorporating zinc sulfide (ZnS) nanoparticles were synthesized using the drop-casting method. The weight percentage of ZnS was varied from 0.01 to 0.05%. The optical, structural, and morphological characteristics of the nanocomposite were examined utilizing  X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force Microscopic (AFM), and UV-Vis spectroscopy. The qualities and dimensions of the GR, PANI, and  ZnS NPs and nanoparticle morphology resulting from the nanocomposite process were examined. Utilizing energy dispersive energy X-ray dispersive (EDX), the weight percentage of each element can be verified. The widening sharp peaks in the XRD patterns suggest

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Electrospun PAN@Ferrites Nanofibers for Rectifier and Humidity Devices
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Zinc cobalt ferrite (ZnCoFe2O4) and zinc ferrite (ZnFe2O4) were prepared using the sol-gel synthesis. composite materials, PAN@CoFe2O4 and PAN@ZnCoFe2O4, were created by combining polyacrylonitrile (PAN) polymer with ZnCoFe2O4 and ZnFe2O4. Electrospinning was used to apply thin coatings onto glass and p-Si wafers. The synthesized fibre for both pure PAN polymers and their ferrite-based composites was illustrated in Field Emission Scanning Electron Microscopy (FESEM) images. The X-ray diffraction (XRD) analysis reveals that the PAN polymer exhibits a prominent peak at a precise angle of 29. 3345°.The size of

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Nuclear Structure Study Using Relativistic Mean Field (RMF) Method
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The current study uses the relativistic mean field approach to investigate the nuclear structure of selected even-even neutron-rich nuclei spanning from the stability line to the neutron drip line. Specifically, the nuclei studied include 16–28O, 30–42Si, 48–60Ca, 56–68Ni, 88–100Kr, 96–122Ru, 140–152Ba, 142–154Sm, and 150–162Er. The relativistic Hartree-Bogoliubov (RHB) method was applied, incorporating effective density-dependent point coupling (DD-PC) and density-dependent meson exchange (DD-ME) interactions. The impact of these interactions was demonstrated through the calculation of various nuclear structure properties

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Study the Structural and Optical Properties (Energy Gap) of Polythiophene/MWCNT/SnO2 Nanocomposite as an NO2 Gas Sensor
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The polythiophene (PTh) is of great interest in various applications due to its unique electrical, mechanical and structural. In this work, PTh was synthesized using the oxidation method by employing ferric chloride (FeCl3) as an oxidizing agent, Then the nanocomposite polythiophene: Multi walled carbon nanotubes: Tin (IV) oxide (PTh/MWCNT/SnO2) was prepared by adding constant weight ratio of MWCNT(0.7g) and different weight ratios of  SnO2 (0.1, and 0.5g) using the oxidation method. The FE-SEM images of the pure PTh and the nanocomposite showed an apparent change in the morphological composition of the surface. The X-ray diffraction (XRD) pattern of PTh/ MWCNT/SnO2 nanocomposites show the app

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Publication Date
Mon Feb 25 2019
Journal Name
Iraqi Journal Of Physics
Nuclear level density with proton resonance using Gaussian orthogonal ensemble theory
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The Gaussian orthogonal ensemble (GOE) version of the random matrix theory (RMT) has been used to study the level density following up the proton interaction with 44Ca, 48Ti and 56Fe.

A promising analysis method has been implemented based on the available data of the resonance spacing, where widths are associated with Porter Thomas distribution. The calculated level density for the compound nuclei 45Sc,49Vand 57Co shows a parity and spin dependence, where for Sc a discrepancy in level density distinguished from this analysis probably due to the spin  misassignment .The present results show an acceptable agreement with the combinatorial method of level density.

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Sensitivity of Newly Prepared Nanomaterials to NO2 Gas and its Importance on Environmental and Industrial Safety
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Polyaniline (PANI) and manganese dioxide (MnO2) doped with nickel oxide (NiO) nanocomposite have emerged as promising materials for gas sensing applications due to their high conductivity and surface area. This study improves the synthesized PANI/MnO2:NiO nanocomposites' sensitivity towards NO2 gas. Atomic force microscopy (AFM), Fourier transfer infrared (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), and X-ray diffraction (XRD) were used to analyze the produced nanocomposites. More precise methods were investigated to identify problems associated with oxidation, corrosion and sensor activity, such as increasing the amount of added nickel oxide, changing the structure of nanocomp

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Optimization of Several Parameters Towards 30% Efficiency Perovskite Based Solar Cell Using SCAPS-1D Software
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A simulated perovskite solar cell based on a P3HT/MAPbI3/C60 structure is examined to achieve 30% PCE using SCAPS-1D software. Several aspects of the perovskite layer were evaluated, including the perovskite layer thickness, CB and VB effective density of state, band gap, and electron affinity. These factors show great influence on the device performance. The best device based on the best examined parameter has exhibited a PCE of 32.1% correlated with FF of 84.8%, VOC of 1.23V and JSC of 30.77 mA.cm-2. Such a result is promising towards achieving high PCE for perovskite-based solar cells by optimizing several factors, including active layer thickness, energy band gap, electron affinity, and effective stat

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Investigate nuclear cross-sections for fusion reaction in the star formation process of the galaxies
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Understanding the CNO cycle and the proton-proton (p-p) chain is essential for comprehending the development of main sequence stars in the initial stages of spiral and elliptical galaxy formation. This study investigates two nuclear reactions that occur in spiral galaxies and elliptical galaxies. Using theoretical computer software (e.g. OriginPro. software program), we summarized the excitation functions to analyze the (p,γ) interaction cross sections of 7Be(p,γ)8B, 12C(p,γ)13N, 14N(p,γ)15O, and 15N(p, γ)12C. In the p-p series and CNO cycle with energy up to 8 MeV. In this work, we compared the theoretical values from the ENDF/B-VII library with the estimated database of nuclear fusion cross sections in hydrogen-burning stellar obj

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Study Evapotranspiration in Iraq Using the Penniman-Monteith Equation for the Period (2008-2020)
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Evapotranspiration is considered an essential element for the stability of the ecosystem due to its importance in many aspects, including the water cycle, which is an important source of fresh water for humans, animals and plants. It also influences climate and temperatures and regulates weather. It also enters into the design of crop irrigation networks, knowing their water needs to prevent drought and desertification. The Penman-Monteith method is effective and accurate for calculating daily reference evapotranspiration and has been adopted by the Food and Agriculture Organization (FAO) as a standard method. This study aims to calculate the variation in evapotranspiration rates in Iraq using the Penman-Monteith method over the past thi

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Study the Influence of X-ray on the Optical and Mechanical Properties of CMC HV/ PAC LV Polymeric Films
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IIn this work, carboxymethyl cellulose/polyanionic cellulose (CMC HV/PAC LV) films were prepared and exposed to different X-ray doses (0, 200, 400, 600 and 800 cGy). Absorption and transmission measurements of the ultraviolet spectrum of the incident light were studied with a DU 800 spectrophotometer. Stress and strain were calculated by applying a tensile force to the samples and increasing its amplitude until the sample breaks. Applying this force to the samples increased the length of the samples. The absorption of CMC HV/PAC LV films increased with increasing X-ray dose, and therefore, the absorption coefficient increased with increasing X-ray dose. The results show that the amount of spectral transmittance of the films decreased wit

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Publication Date
Sun Dec 01 2024
Journal Name
Iraqi Journal Of Physics
Fabrication of Different Types of Photodetectors Based on Carbon Quantum Dots/Alq3 Organic Material
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In this work, the properties of the photodetector were improved by using carbon quantum dots (CQDs) and tris (8-hydroxyquinoline) aluminium (III) (Alq3) polymer when deposited on glass and silicon substrates. CQDs were prepared using an electrochemical method. Two methods of deposition were used; the first was drop casting, and the other was spin coating. The structural, electrical, and optical properties were studied. Measurements were made of the manufactured photoconductive detector's current-voltage (I–V) properties, photocurrent gain, response time, and quantum efficiency, responsivity. The constructed detector's performance was measured without light and using a 250-watt tungsten lamp, whose wavelength range was between 500 and 8

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Publication Date
Sun Feb 24 2019
Journal Name
Iraqi Journal Of Physics
Newtonian and modified newtonian gravitational simulation of spiral galaxies
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One of the most powerful tools for any stellar dynamics is the N-body simulation. In an N-body simulation the motion of N particles is followed under their mutual gravitational attraction. In this paper the gravitational N-body simulation is described to investigate Newtonian and non- Newtonian (modified Newtonian dynamics) interaction between the stars of spiral galaxies. It is shown that standard Newtonian interaction requires dark matter to produce the flat rotational curves of the systems under consideration, while modified Newtonian dynamics (MOND) theorem provides a flat rotational curve and gives a good agreement with the observed rotation cu

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Publication Date
Wed Dec 01 2010
Journal Name
Iraqi Journal Of Physics
Neutron Yield From Gamma Ray Incineration of Radioactive Fission Products
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The neutron flux in this paper, which is generated as a result of γ incineration of the radioactive fisssion products isotopes has been evaluated .It is obvious from this paper that the neutron flux value depends on the number of incineration nuclei and the nuclear cross-section of the incinerated isotopes, and the neutron flux is directly dependent on γ-ray flux. The neutron flux increases from 1010to 1017n/s.gm as the irradiation flux increases from 1016to 1020 γ/cm2.s. It is concluded that the γ-incineration technique can be used to produce a switchable neutron source of high flux.

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Publication Date
Sun Feb 10 2019
Journal Name
Iraqi Journal Of Physics
The effect of thickness on the optical properties of Cu2S thin films
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In this work, the optical properties of Cu2S with different thickness
(1400, 2400, 4400) Ǻ have been prepared by chemical spray pyrolys
is method onto clean glass substrate heated at 283 oC ±2. The effect
of thickness on the optical properties of Cu2S has been studied. It
was found that the optical properties of the electronic transitions on
fundamental absorption edge were direct allowed and the value of the
optical energy gap of Cu2S (Eg) for direct transition decreased from
(2.4-2.1) eV with increasing of the thickness from (1400 - 4400)Ǻ
respectively. Also it was found that the absorption coefficient is
increased with increasing of thicknesses. The optical constants such<

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Publication Date
Tue Jan 08 2019
Journal Name
Iraqi Journal Of Physics
The structure and optical properties of organic semiconductor bulk hetrojunction blend (NiPcTs/Alq3) thin films
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The effect of heat treatment on the optical properties of the bulk heterojunction blend nickel (II) phthalocyanine tetrasulfonic acid tetrasodium salt and Tris (8-hydroxyquinolinato) Aluminum (NiPcTs/Alq3) thin films which prepared by spin coating was described in this study. The films coated on a glass substrate with speed of 1500 rpm for 1.5 min and treated with different annealing temperature (373, 423 and 473) K. The samples characterized using UV-Vis, X ray diffraction and Fourier transform Infrared (FTIR) spectra, XRD patterns indicated the presence of amorphous and polycrystalline blend (NiPcTs/Alq3). The results of UV visible shows that the band gap increase with increasing the annealing temperature up to 373 K and decreases with

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