Fizik / Physics: Recent submissions

Now showing items 301-320 of 446

Investigation of the zenith angle dependence of cosmic-ray muons at sea level

Bektaşoğlu, Mehmet; Arslan, Halil (INDIAN ACAD SCIENCES, 2013)

Angular distribution of cosmic-ray muons at sea level has been investigated using the Geant4 simulation package. The model used in the simulations was tested by comparing the simulation results with the measurements made ...
Time relaxation of metastable chaotic state in TlInS2

Şentürk, Erdoğan (PERGAMON-ELSEVIER SCIENCE LTD, 2002)

The results of measurements of the time dependences of the dielectric constant of T1InS(2) in the commensurate ferroelectric phase are presented. The observation of the decay of epsilon at different stabilized temperatures ...
Effect of electrical poling on conductivity in guest-host polymers

Karakuş, Yusuf (NATL INST OPTOELECTRONICS, 2013)

A comparative study on 4-N,N'-dimethylamino-3- acetamidonitrobenzene (DAN) doped polycarbonate (PC) and DAN doped poly-methyl-methacrylate (PMMA) shows that electrical poling enhances electrical conductivity. This enhancement ...
Producing CuO and ZnO composite thin films using the spin coating method on microscope glasses

Okur, İbrahim (ELSEVIER, 2013)

In this work, we have presented a new route to produce pure ZnO and composite ZnO-CuO thin films. In the process we have started with pure ZnO thin films and ended up with CuO by doping Cu in various percentages, ranging ...
Transition Parameters for Doubly Ionized Lutetium

Usta, Betül; Özdemir, Leyla (POLISH ACAD SCIENCES INST PHYSICS, 2013)

Using the relativistic Hartree-Fock method developed by Cowan, we calculated the electric dipole (E1) transition parameters such as the wavelengths, the weighted oscillator strengths, and the transition probabilities (or ...
Quantum chemical computational studies on bisthiourea zinc chloride

Avcı, Davut; Atalay, Yusuf (INDIAN ASSOC CULTIVATION SCIENCE, 2012)

The molecular geometry and vibrational frequencies of bisthiourea zinc chloride (BTZC) in the ground state have been calculated using the Hartree-Fock (HF) and density functional method (B3LYP) with chosen basis sets. The ...
The level structure of singly-ionized actinium

Ürer, Güldem; Özdemir, Leyla (KOREAN PHYSICAL SOC, 2012)

We have presented a multiconfiguration Dirac-Fock (MCDF) study in the framework of Breit and quantum electrodynamic (QED) effects on the low-lying level structure of singly-ionized actinium (Ac II). The computations have ...
Characterizing the atomic mass surface beyond the proton drip line via alpha-decay measurements of the pi s(1/2) ground state of Re-165 and the pi h(11/2) isomer in Ta-161

Ertuğral Yamaç, Filiz (AMER PHYSICAL SOC, 2012)

The alpha-decay chains originating from the pi s(1/2) and pi h(11/2) states in Au-173 have been investigated following fusion-evaporation reactions. Four generations of alpha radioactivities have been correlated with ...
QPNM calculation for the ground state magnetic moments of odd-mass deformed nuclei: Er157-167 isotopes

Yakut, Hakan; Ekber Gulıyev; Güner, Mehmet; Tabar, Emre; Zemine Zenginerler (ELSEVIER SCIENCE BV, 2012)

A new microscopic method has been developed in the framework of the Quasiparticle-Phonon Nuclear Model (QPNM) in order to investigate spin polarization effects on the magnetic properties such as magnetic moment. intrinsic ...
Molecular structure, vibrational spectra, NLO and NBO analysis of bis(8-oxy-1-methylquinolinium) hydroiodide

Avcı, Davut; Atalay, Yusuf (PERGAMON-ELSEVIER SCIENCE LTD, 2012)

In this paper, quantum chemistry calculations of geometric parameters, harmonic vibrational wavenumbers, molecular frontier orbital energies (HOMO and LUMO) and the electronic properties of bis(8-oxy-1-methylquinolinium) ...
Helium atom diffraction study of low coverage phases of decanethiol self-assembled monolayers prepared by supersonic molecular beam deposition

Duman, Sıtkı (ELSEVIER SCIENCE BV, 2013)

Thiol self-assembled monolayers (SAMs) on gold surfaces have a wide range of applications including surface patterning and metal contact-organic semiconductor interface modification in organic electronic devices. Here we ...
Phonons and superconductivity in the cubic perovskite Cr3RhN

Tütüncü, Hüseyin Murat (AMER INST PHYSICS, 2012)

We have performed an ab initio study of structural, electronic, vibrational, and superconducting properties of Cr3RhN. The calculations have been carried out by employing the density functional theory, a linear-response ...
Simulations of Muon Flux in Slanic Salt Mine

Bektaşoğlu, Mehmet; Arslan, Halil (HINDAWI LTD, 2012)

Geant4 simulation package was used to simulate muon fluxes at different locations, the floor of UNIREA mine and two levels of CANTACUZINO mine, of Slanic Prahova site in Romania. This site is specially important since it ...
Energy Levels, E1, E2, and M1 Transitions for Pa V

Ürer, Güldem; Özdemir, Leyla (ELSEVIER, 2012)

Using the multiconfiguration Hartree-Fock and multiconfiguration Dirac-Fock methods, we calculated the energy levels, electric dipole (E1), electric quadrupole (E2), and magnetic dipole (M1) transition parameters, such as ...
OLPT CONDUCTIVITY IN WOLLASTONITE INLAID NR/SBR TYPE ELASTOMER BASED MATERIAL

Şentürk, Erdoğan; Demirer, Ahmet; Okur, İbrahim (UNIV CHEMISTRY & TECHNOLOGY, PRAGUE, 2012)

The electrical properties of wollastonite inlaid NR/SBR type elastomer based material have been evaluated. Electrical properties of the samples were measured in the temperature range of 303 to 453 K and the frequency range ...
Nature of the scissors mode in nuclei near shell closure: the tellurium isotope chain

Guliyev, Ali (ELSEVIER SCIENCE BV, 2002)

Quasiparticle random-phase approximation calculations, where rotational, translational and Galilean invariance are restored selfconsistently by using separable effective forces, are presented for the ground state dipole ...
Bis(mu-3-hydroxybenzoato)-kappa O-3(1),O-1 ':O-1;kappa O-3(1):O-1,O-1 '-bis[(3-hydroxybenzoato-kappa O-2,O ')(isonicotinamide-kappa N-1)cadmium] tetrahydrate

Delibaş, Nagihan (WILEY-BLACKWELL, 2012)

In the title centrosymmetric binuclear Cd-II compound, [Cd-2(C7H5O3)(4)(C6H6N2O)(2)]center dot 4H(2)O, the six-coordinated Cd-II atom is chelated by the carboxylate groups of the two 3-hydroxybenzoate (HB) anions; the two ...
Azimuthal angular dependence study of the atmospheric muon charge ratio at sea level using Geant4

Arslan, Halil; Bektaşoğlu, Mehmet (IOP PUBLISHING LTD, 2012)

The azimuth dependence of the cosmic muon charge ratio at sea level was estimated using the Geant4 simulation package. Simulations were separately run at 12 azimuth angles ranging from 0 degrees to 330 degrees with 30 ...
Estimation of the effects of the Earth's electric and magnetic fields on cosmic muons at sea level by Geant4

Bektaşoğlu, Mehmet; Arslan, Halil (PERGAMON-ELSEVIER SCIENCE LTD, 2012)

We have investigated effects of the Earth's electric and magnetic fields on the cosmic muon fluxes at sea level using the Geant4 simulation package. Energies and fluxes of the primary protons and alpha particles incident ...
First-principles study of electronic and dynamical properties of the TaC(001) surface

Tütüncü, Hüseyin Murat; Bağcı, Sadık; Duman, Sıtkı (ELSEVIER SCIENCE SA, 2012)

We have made theoretical investigations of the atomic geometry, electronic structure, and lattice dynamics of the (001) surface of TaC. The atomic geometry and electronic structure for this surface have been calculated by ...