American Journal of Modern Physics

Volume 2, Issue 2, March 2013

  • Sphere-to-Plane Electrodes Configuration of Positive and Negative Plasma Corona Discharge

    Sabah I. Wais, Dunia D. Giliyana

    Issue: Volume 2, Issue 2, March 2013
    Pages: 46-52
    Received: Feb. 03, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: An experimental investigation has been carried out with sphere-to-plane geometrical electrodes for pos-itive and negative corona discharge at atmospheric pressure and different inter-electrode separation. The experimental results have been compared particularly with those refer to point-to-plane and point-to-ring geometriesand a similar common feat... Show More
  • Metastable Bound State of Likely Charged Classic Coulomb Particles

    Alexander E. Dubinov, Ilya N. Kitayev

    Issue: Volume 2, Issue 2, March 2013
    Pages: 53-57
    Received: Feb. 25, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: When the classical charged particle is scattered on the likely charged target particle, executing the rapid finite motion, a metastable bound state of the incident particle and the target particle may occur. This type of behavior differs dramatically from the Rutherford scattering.
  • Effective Temperature of the Sun Based on Log Periodic Dipole Antenna Performance In The Range From 45 MHz to 870 MHz

    Z. S. Hamidi, S. H. Chumiran, Z. S. Hamidi, N. N. M. Shariff, Z. A. Ibrahim, A. Mohamad

    Issue: Volume 2, Issue 2, March 2013
    Pages: 58-60
    Received: Feb. 21, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: The Log Periodic Dipole Antenna (LPDA) performance of solar burst monitoring in the range of (45 -870) MHz is presented. This project is under the International Space Weather Initiative (ISWI) program in order to observe the solar activities within 12 hours per day. At the first stage, we make an effort by constructing LPDA that suitable with the c... Show More
  • Peculiarities of Magnetocaloric Effect in Manganites Connected with Magnetic Heterogeneous State

    L. I. Koroleva, A. S. Morozov

    Issue: Volume 2, Issue 2, March 2013
    Pages: 61-67
    Received: Mar. 14, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: Magnetocaloric effect (MCE) or T-effect was studied in La1-xSrxMnO3, Sm0.55Sr0.45MnO3 and PrBaMn2O6 manganites. It has been found that the maximum value of MCE, measured by direct method, is far less than obtainable by computation from the change of the magnetic entropy in Curie temperature TC. This phenomenon is explained by presence in them of t... Show More
  • Formation of Relativistic Non-Viscous Fluid in Central Collisions of Protons with an Energy of 0.8 Tev with Photoemulsion Nuclei

    U. U. Abdurakhmanov, V. V. Lugovoi

    Issue: Volume 2, Issue 2, March 2013
    Pages: 68-70
    Received: Mar. 11, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: By the methods of mathematical statistics we test a qualitative prediction of the old theory of relativistic hy-drodynamics non-viscous liquid which can be used as a part of the process of hadronization within the modern hydrody-namical approach for the description of the quark-gluon plasma. Experimental data on the interaction of protons with the ... Show More
  • A Study of Droplet Evaporation

    Koffi Sagna, Amah D’Almeida

    Issue: Volume 2, Issue 2, March 2013
    Pages: 71-76
    Received: Dec. 12, 2012
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: We investigate the problem of the vaporization of a liquid droplet in a hotter environment of the same fluid. The Navier-Stokes equations are solved for a physical model which assumes spherical symmetry and laminar conditions in the quasi steady case. The study is mainly characterized by the fact that the equation of conservation of momentum is eff... Show More
  • Investigation of Structural, Electronic and Optical Properties of KCdF3

    M. Nurullah Secuk, Emel Kilit Dogan, urat Aycibin, Bahattin Erdinc, Harun Akkus

    Issue: Volume 2, Issue 2, March 2013
    Pages: 77-80
    Received: Mar. 11, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: The structural, electronic and optical properties of KCdF3 are investigated using the density functional theory (DFT) within the generalized gradient approximation (GGA). The calculated lattice parameters have been compared to experimental results and demonstrated to be in good agreement with them. The calculated electronic band structure of cubic ... Show More
  • Point groups in solid state physics I: Point group Oh

    Ayse Delibas, Vildan Aykan, Deniz Turkkan, Harun Akkus

    Issue: Volume 2, Issue 2, March 2013
    Pages: 81-87
    Received: Mar. 12, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: he definitions of all symmetry operations, their permutation counterparts and matrix representations, the multiplication table, all classes, abelian subgroups, and some other subgroups of point group Oh are clearly obtained. For every symmetry operation (or element) of Oh, appropriate figures are pictured for the sake of clarity.
  • Ab Initio Calculations for Properties of Laves Phase V2m (M = Zr, Hf, Ta) Compounds

    T. Chihi, M. Fatmi, B. Ghebouli

    Issue: Volume 2, Issue 2, March 2013
    Pages: 88-92
    Received: Mar. 08, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: A first-principles plane-wave pseudopotentials method based on the density functional theory (DFT), is used to investigate the structural, mechanic and electronic of Laves phase V2M (M = Zr, Hf, Ta) compounds. It is found that V2Hf is mechanically unstable because this compound do not satisfy the conditionC_11-C_12> 0 below 6.27 GPa, it becomes sta... Show More
  • On the Bond between the Chemical Reaction Rate and the Velocity of the System under Study

    E. V. Veitsman

    Issue: Volume 2, Issue 2, March 2013
    Pages: 93-97
    Received: Mar. 06, 2013
    Accepted:
    Published: Mar. 10, 2013
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    Abstract: On the basis of special relativity and irreversible thermodynamics it is shown how the chemical reaction rates vary under relativistic conditions. It is shown as well that the absolute temperature T will vary according to X.Ott under these conditions. It can be represented as the trace of the tensor of rank 2.