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Energy Loss Straggling of Hydrogen Ions in DNA Target 氢离子在DNA靶中的能量损失与分散
International Review of Physics Pub Date : 2013-08-31 DOI: 10.15866/IREPHY.V7I4.4447
Khalid A. Ahmad, Riayhd K. A. Al-Ani, M. M. Mahmoud
{"title":"Energy Loss Straggling of Hydrogen Ions in DNA Target","authors":"Khalid A. Ahmad, Riayhd K. A. Al-Ani, M. M. Mahmoud","doi":"10.15866/IREPHY.V7I4.4447","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I4.4447","url":null,"abstract":"To understand and control radiation damage of living tissues, it is necessary to describe an accurate description the energy loss and energy loss straggling of ion beam to target. In present work the energy loss straggling of proton beam in DNA has been calculated using the dielectric of plasmonpole approximation (PPA) formula. This procedure has been used to calculate the electronic excitation probability of DNA as a function of the transferred energy by the swift projectile as well as the average energy of the target. A charge exchange has been taken in the consideration. Our results show that the most probable electronic excitations have energies in the range E ≈ (10-20)eV, particularly for projectile energies T ≤ 100 keV The maximum probability of excite electrons decreases as the projectile energy T increases.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121517831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ESCA Analysis of Doped Hydrogenated a-GexSi1-x Thin Films 掺杂氢化a-GexSi1-x薄膜的ESCA分析
International Review of Physics Pub Date : 2013-08-31 DOI: 10.15866/IREPHY.V7I4.4443
A. Alnajjar, M. Alias, A. Al-Douri, M. Makadsi
{"title":"ESCA Analysis of Doped Hydrogenated a-GexSi1-x Thin Films","authors":"A. Alnajjar, M. Alias, A. Al-Douri, M. Makadsi","doi":"10.15866/IREPHY.V7I4.4443","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I4.4443","url":null,"abstract":"A polycrystalline GexSi1-x alloy has been prepared. Its structure and composition have been determined using various standard surface techniques. Hydrogenated a-GexSi1-x thin films (a-GexSi1-x:H) were deposited on glass substrates by a thermal evaporation method. These thin films were fabricated under different deposition conditions, such as Ge content (x = 0–1) and atomic percentage of Al (p-type) and As (n-type) dopants (0.5%–3.5%). The element (Si and Ge) concentration of the prepared alloy and films were determined by atomic absorption spectroscopy (AAS) and energy-dispersive spectroscopy EDS. The structures and chemical compositions of these films were investigated using X-ray diffraction analysis (XRD) and electron spectroscopy for chemical analysis (ESCA), respectively. Fourier transform infrared spectroscopy (FTIR) was used to monitor the effect of hydrogenation on these thin films prepared under various deposition conditions.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127237626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and Study of the Physical Properties of Advanced Composites Ferrites Doped with Ferroelectric Materials as Electromagnetic Wave Detectors 掺杂铁电材料的新型复合铁氧体电磁波探测器的制备及物理性能研究
International Review of Physics Pub Date : 2013-08-31 DOI: 10.15866/IREPHY.V7I4.4448
O. Hemeda, E. M. Ahmed, H. Hassan
{"title":"Preparation and Study of the Physical Properties of Advanced Composites Ferrites Doped with Ferroelectric Materials as Electromagnetic Wave Detectors","authors":"O. Hemeda, E. M. Ahmed, H. Hassan","doi":"10.15866/IREPHY.V7I4.4448","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I4.4448","url":null,"abstract":"Magnetoelectric composites (1-x)Ni0.6Zn0.4Fe2O4+(x)(BaTiO3) (where x=0.0%,20%, 40%, 60% , 80%  and 100%BT content)  were prepared by using a conventional ceramic double-sintering method. Phase analysis was carried out using the x-ray diffraction technique, which confirms a cubic spinel structure for the ferrite and tetragonal perovskite structure for the ferroelectric phase. In order to confirm the formation of NZF phase into the BT phase; the IR spectra of the composite samples were recorded. The variation of the dielectric constant (e') and loss tangent (tan δ) as a function of temperature were studied. The conduction phenomenon is explained on the basis of a small polaron hopping model. The dc resistivity was measured as a function of temperature in the range from room temperature to 700 °C. The static magnetoelectric conversion factor (dE/dH)H was measured as a function of the magnetic field. All composites show a linear increase of magnetoelectric conversion in the presence of a static magnetic field.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132500110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Approximate Solutions for Nonlinear Partial Fractional Differential Equations 非线性偏分数阶微分方程的近似解
International Review of Physics Pub Date : 2013-08-31 DOI: 10.15866/IREPHY.V7I4.4444
K. Gepreel, T. Nofal
{"title":"Approximate Solutions for Nonlinear Partial Fractional Differential Equations","authors":"K. Gepreel, T. Nofal","doi":"10.15866/IREPHY.V7I4.4444","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I4.4444","url":null,"abstract":"In this article, we use  the Adomain decomposition method to find the approximate solutions for the linear and nonlinear partial fractional differential equations via the nonlinear Schrodinger  partial fractional  differential equation and the telegraph partial fractional differential equation. The fractional derivatives are described in the Caputo sense. We compare between the approximate solutions and the exact solutions for the partial fractional differential equations when α,β→1. Also we make the Figures to compare between the approximate solutions and the exact solutions for the partial fractional differential equations when α,β→1. This method is powerfull to find the approximate solutions for nonlinear partial fractional differential equations. Also we will compare between the approximate solutions which obtained by using the variational itearation method and the approximate solutions which obtained by Adomain decomposition methods.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114970862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Metal Vapours on the Transport Properties of Nitrogen Plasma 金属蒸气对氮等离子体输运特性的影响
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4428
A. Amry
{"title":"Influence of Metal Vapours on the Transport Properties of Nitrogen Plasma","authors":"A. Amry","doi":"10.15866/IREPHY.V7I3.4428","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4428","url":null,"abstract":"Theoretical investigation of nitrogen-copper arc transport properties and an arc plasma model in stationary state have studied at low temperature i.e. between 3,500K and 13,000K at atmospheric pressure.  Results showed that the presence of small amounts of metal vapours, which have low ionization potential such as copper, modify the plasma characteristics. The solution of Elenbaas-Heller gives us some information about the effect of metal vapours emitted from electrode on the characteristics of the arc column. We concluded that a small fraction of metal vapours in the arc column modify the electric field, current and the axial temperature.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127446148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and Characterization of Strontium Doped Barium Titanate Ceramics 掺锶钛酸钡陶瓷的合成与表征
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4434
A. Elbasset, F. Abdi, T. Lamcharfi, S. Sayouri, M. Aillerie
{"title":"Synthesis and Characterization of Strontium Doped Barium Titanate Ceramics","authors":"A. Elbasset, F. Abdi, T. Lamcharfi, S. Sayouri, M. Aillerie","doi":"10.15866/IREPHY.V7I3.4434","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4434","url":null,"abstract":"In order to investigate effect doping with strontium on structural and dielectric properties of BaTiO3, a series of B1-xSrxTiO3 (BSxT) ceramic powders (0, 0.05, 0.1, 0.15, 0.2, 0.3, 0.4 and 0.5) were prepared by the sol gel method. The phase formation and crystal structure of BaTiO3 were checked by X-ray diffraction analysis and Raman spectroscopy. It was observed that the quadratic structure of the pure sample transforms to pseudo cubic under Sr substitution. The morphology and microstructure of the samples were examined by scanning electron microscopy (SEM); a quiet regular morphology in shape was observed with an average grain size of 2 m in accordance with that reported in the literature. The dielectric investigations show that BST is a classical ferroelectric material and that the temperature of the maximum of the permittivity, Tm, decreases with Sr content.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128017180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Neutral Higgs-Boson Production in Association with a Pair of Muon-Sneutrino at e- e+ Linear Colliders 中性希格斯-玻色子的产生与e- e+线性对撞机上一对μ子-中微子的关联
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4429
B. Y. al-negashi, T. El-Azim, I. abdul-Magead
{"title":"Neutral Higgs-Boson Production in Association with a Pair of Muon-Sneutrino at e- e+ Linear Colliders","authors":"B. Y. al-negashi, T. El-Azim, I. abdul-Magead","doi":"10.15866/IREPHY.V7I3.4429","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4429","url":null,"abstract":"The full virtual one loop radiative elctroweak corrected cross section, σ, to the e- e+→ν~μ ν~¯μ h0 channel is presented. The dependence of the (σ0 and σ) on the √s and the other parameters in the framework of Minimal Supersymmetric Standard Model (MSSM) is discussed. The numerical results in each of the SPS 1b and SPS 4 scenarios show clearly that σ are always more than the corresponding σ0. The Δσ/σ0 varies in the range of [−43%, 40%] as √s goes from 0.5 TeV to 2.5 TeV for SPS 1b scenario and in the range of [41%, 54%] as √s goes from 1 TeV to 2.5 TeV for SPS 4 one.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131057533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
X Band Test Bench Developement Requiring High Voltage Bias for Electronic Tunable Devices Using Anisotropic Materials 使用各向异性材料的电子可调谐器件需要高电压偏置的X波段试验台的开发
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4435
F. Krasinski, B. Splingart, U. Maschke, C. Legrand
{"title":"X Band Test Bench Developement Requiring High Voltage Bias for Electronic Tunable Devices Using Anisotropic Materials","authors":"F. Krasinski, B. Splingart, U. Maschke, C. Legrand","doi":"10.15866/IREPHY.V7I3.4435","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4435","url":null,"abstract":"In this paper, we present complete operating bench experiments used to characterize a type of tunable devices in the microwave domain. This type of tunable devices requires unusual high AC/DC bias voltage (up to 400V). The experimental characterization system is based on the reflection and transmission parameters of a quadrupole placed between the two ports of a network analyzer, in the 8-12 GHz range. For the dielectric characterizations of materials, it is possible to determine the real part (’) and the imaginary part (’’) of the dielectric constant ( of the material. For tunable devices using polymer dispersed liquid crystals, it is necessary to apply a high electric driving field (up to 4V/µm @1 kHz). In the test bench, we used a microstrip phase shifter which presents a 100µm-thick active part. Therefore a 400V external voltage bias device was developed. We first present an applicative circuit, that is, a phase shifter, which is machined to study the electronic behaviors of anisotropic materials. We then present the design and characteristics of the bias circuit. Secondly, we present experimental results for two Polymer Dispersed Liquid Crystals made with two different monomers (NOA65-Norland, and PolyPropylene Glycol Di Acrylate540), with a commercial liquid crystal (5CB-Merck).","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125435584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Ionic Conductivity of Polyethylene Oxide and Ionic Liquid Composites 聚乙烯氧化物与离子液体复合材料的离子电导率研究
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4431
K. I. Khaleel
{"title":"Study of Ionic Conductivity of Polyethylene Oxide and Ionic Liquid Composites","authors":"K. I. Khaleel","doi":"10.15866/IREPHY.V7I3.4431","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4431","url":null,"abstract":"Polymer composite films of (100-x) PEO:x IL (l-ethyl-3-methylimidazoliumTosylate) have been successfully prepared by hot-press and solution cast techniques for x = 0-50 wt.%. Impedance spectroscopic studies show the presence of grain boundaries in hot-press films. Inspite of this, the electrical conductivity a (hot-press sample) was higher than a (solution cast films). A possible explanation based on the presence of 'run through' and 'broken' pores/ voids in the film is suggested.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116701619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser Irradiation Effect on Structural and Optical Properties of CuO Thin Films Prepared by Chemical Spray Pyrolysis 激光辐照对化学喷雾热解法制备CuO薄膜结构和光学性能的影响
International Review of Physics Pub Date : 2013-06-30 DOI: 10.15866/IREPHY.V7I3.4433
M. Ameen, A. Kadhim, H. Yaseen, A. S. Jassim, Nisreen K. AbduAl-Ameer, Shaimaa I. Mahmood
{"title":"Laser Irradiation Effect on Structural and Optical Properties of CuO Thin Films Prepared by Chemical Spray Pyrolysis","authors":"M. Ameen, A. Kadhim, H. Yaseen, A. S. Jassim, Nisreen K. AbduAl-Ameer, Shaimaa I. Mahmood","doi":"10.15866/IREPHY.V7I3.4433","DOIUrl":"https://doi.org/10.15866/IREPHY.V7I3.4433","url":null,"abstract":"substrate at temperature (635 K) by chemical spray pyrolysis technique. The films were annealed with CW diode laser (808 nm) for (1 and 3) min. X-ray diffraction (XRD) was used to study the structure of the films. The patterns showed that the films as-prepared have typical peaks of monoclinic tenorite (CuO), which confirmed by (111)  and (111) diffraction peaks. The later peak disappeared with laser annealing for (1 and 3) min and (200) peak appeared. The annealing leads to increase the intensity of  (111)  diffraction peak. The UV-Vis spectrophotometer was used to study the optical properties of the films. The results showed that the annealing leads to increase the transmittance and decrease the absorbance. The optical energy gap (Eg) of these films is direct, and it increases with increasing the laser exposure time.","PeriodicalId":448231,"journal":{"name":"International Review of Physics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133925890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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