Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 265, listelenen: 61-80
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Calculations of double-differential triton emission cross sections at 62-MeV proton-induced reactions
(Pleiades Publishing Inc, 2014)Double-differential cross sections (d (2) sigma/d Omega dE >) have been calculated and analyzed for triton production in proton-induced reactions on Al-27, Fe-54,Fe-56, Au-197, and Pb-208 target nuclei at incident energy ... -
Improvement of the Nature of Indentation Size Effect of Bi-2212 Superconducting Matrix by Doped Nd Inclusion and Theoretical Modeling of New Matrix
(Springer, 2014)Neodmium (Nd) inclusions at different stoichiometric ratios (x=0.0, 0.001 %, 0.005 %, 0.01 %, 0.05 %, 0.1 %) are doped in the Bi-2212 superconducting samples and the samples obtained are subjected to the sintering process ... -
Comparison of fission barrier and level density models for (alpha,f) reaction of some heavy nuclei
(Pergamon-Elsevier Science Ltd, 2014)In this work, alpha induced fission reactions for some heavy nuclei (Th-232, U-235, U-238, Np-237 and Pu-238) are calculated based on both fission barrier models and level density models by using the TALYS 1.2 code. The ... -
(3He,xn) Reaction Cross-Section Calculations for the StructuralFusion Material 181Ta in the Energy Range of 14–75 MeV
(Springer, 2014)The theoretical neutron-production cross-sections produced by Ta-181(He-3,xn)Re184-x reactions (x = 1-7) for structural fusion material Ta-181 in He-3-induced reactions have been performed in the incident He-3 energy range ... -
Photo-neutron cross-section calculations of 142,143,144,145,146,150Nd rare-earth isotopes for (γ, n) reaction
(Pleiades Publishing Inc, 2014)The theoretical photo-neutron cross sections for (gamma, n) reaction have been calculated on <SUP>142,143,144,145,146,150</SUP>Nd rare-earth isotopes at photon energies of 8-23 MeV using the PCROSS, TALYS 1.2, and EMPIRE ... -
Electronic structure and magnetic properties of PbMO3 (M = Fe, Co, Ni) magnetic perovskites: An ab initio study
(World Scientific Publ Co Pte Ltd, 2014)We present the electronic, magnetic and structural properties of the magnetic transition metal oxides PbMO3 (M= Fe, Co, Ni) in cubic perovskite structure. The calculations are based on the density functional theory (DFT) ... -
Calculations of Double Differential Deuteron Emission Cross Sections at 62 MeV Proton Induced Reactions
(Springer, 2013)In this study, double differential deuteron emission cross sections for Al-27, Fe-54,Fe-56, Au-197, Pb-208 and Bi-209 target nuclei have been calculated by the TALYS code at 62 MeV proton energy. The use of TALYS involved ... -
The Structural and Electrical Study of Lu-Doped YBCO System
(Springer, 2013)We have prepared a series of bulk superconducting samples with the nominal composition of Y1-xLuxBa2 Cu3Oy (where x = 0.0, 0.05, 0.1, 0.2 and 0.3) by the conventional solid-state reaction method. The samples were characterized ... -
Ab initio search for global minimum structures of neutral and anionic hydrogenated Li-5 clusters
(Elsevier Science Bv, 2013)The structure and some electronic properties of neutral and anionic Li5Hn (n = 0-6) clusters have been studied by using the stochastic search method with the B3LYP/6-31G level of theory. After searching possible isomers, ... -
Experimental and theoretical approaches on mechanical evaluation of Y123 system by Lu addition
(Springer, 2013)This work is the continuation of a systematic study on the characterization of the Lu-added Y123 bulk superconducting materials prepared by the nitrate compounds and derivatives at 970 degrees C for 20 h. In this part, the ... -
(γ,2n) Reaction Cross Section Calculations on Several Structural Fusion Materials
(Springer, 2013)In this study, the theoretical photo-neutron cross-sections produced by (gamma,2n) reactions for several structural fusion materials such as V-51, Mn-55, Ni-58, Zr-90,Zr-91,Zr-92,Zr-94, and Ta-181 have been carried out for ... -
Pre-equilibrium neutron-emission spectra of U-238 with an effective nucleon-nucleon interactions
(Pergamon-Elsevier Science Ltd, 2013)In this study, the initial exciton numbers for the target nucleus U-238 were calculated through a new method offered by Tel et al. (Ann. Nucl. Energy, 35, 220, 2008). Neutron-emission spectra produced by (n,xn) reactions ... -
(p,α) Reaction Cross Sections Calculations of Fe and Ni Target Nuclei Using New Developed Semi-empirical Formula
(Springer, 2013)Iron (Fe) and nickel (Ni) are important fusion structural materials in reactor technology. The gas production in the metallic structure arising from many different types of nuclear reactions has been a significant damage ... -
Silver and fluoride doped hydroxyapatites: Investigation by microstructure, mechanical and antibacterial properties
(Elsevier Sci Ltd, 2013)Hydroxyapatite co-doped with Ag+ and F- ions was synthesized by the precipitation method and sintered at 1100 degrees C for 1 h. Samples were characterized by density, X-ray diffraction, Fourier transform infrared spectroscopy, ... -
Investigation of Lead Target Nuclei Used on Accelerator-Driven Systems for Tritium Production
(Springer, 2012)High-current proton accelerators are being researched at Los Alamos National Laboratory and other laboratories for accelerator production of tritium, transmuting long-lived radioactive waste into shorter-lived products, ... -
Investigation of Some Stellar Iron Group Fusion Materials for (n, p) Reactions
(Springer, 2012)In this study, we present the results of a careful analysis of cross sections of some important iron (Fe) group target elements (20 a parts per thousand currency sign Za parts per thousand currency sign28) for astrophysical ... -
Solving the constant source problem for the quadratic anisotropic scattering kernel using the modified F-N method
(Carl Hanser Verlag, 2012)In this work, the F-N method with different numerical approximations is used to solve the constant source problem for the quadratic anisotropic scattering kernel. Casev eigenfimctions and the orthogonality relations of ... -
The Effect of the Number of Simulations on the Exponents Obtained by Finite-Size Scaling Relations of the Order Parameter and the Magnetic Susceptibility for the Four-Dimensional Ising Model on the Creutz Cellular Automaton
(Springer/Plenum Publishers, 2012)The four-dimensional Ising model is simulated on the Creutz cellular automaton using finite-size lattices with linear dimension 4a parts per thousand currency signLa parts per thousand currency sign8. The exponents in the ... -
Microwave-induced synthesis of alginate-graft-poly(N-isopropylacrylamide) and drug release properties of dual pH- and temperature-responsive beads
(Elsevier Science Bv, 2012)The first decade of the 21st century saw an increasing interest in the development of devices and biomaterials for delivery of bioactive substances that can be controlled by external stimuli. This study deals with the ... -
Calculation of Equilibrium and Pre-equilibrium He-4-Emission Spectra at 62 MeV Proton Incident Energy
(Springer, 2011)In this study, the He-4-emission cross sections for Al-27, Fe-54,Fe-56, Au-197, Pb-208 and Bi-209 target nuclei have been calculated at 62 MeV proton energy. In these calculations, the pre-equilibrium effects have been ...