American Journal of Physics and Applications

Volume 3, Issue 2, March 2015

  • Features of Electroconductivity of γ-Irradiated Composites in Heating-Cooling Conditions

    Nabi Shamshad Aliyev, Musafir Mazahir Guliyev, Arif Musa Maharramov, Rafiga Soltan Ismayilova

    Issue: Volume 3, Issue 2, March 2015
    Pages: 15-20
    Received: Feb. 13, 2015
    Accepted: Feb. 21, 2015
    Published: Mar. 02, 2015
    Downloads:
    Views:
    Abstract: It has been studied the behavior of temperature dependence of volume electroconductivity σ on direct current (DC) of composite medium of high-density polyethylene/α-Fe2O3 in the field of T=20-1350C within heating-cooling conditions before and after γ-irradiation at dose up to 500kGy. At lgσ(T) dependence of unirradiated composites while heating at ... Show More
  • Improvement of X-Ray Reflectivity Analysis on Surface and Interface Roughness Estimation

    Yoshikazu Fujii

    Issue: Volume 3, Issue 2, March 2015
    Pages: 21-24
    Received: Jan. 26, 2015
    Accepted: Feb. 19, 2015
    Published: Mar. 03, 2015
    Downloads:
    Views:
    Abstract: X-ray reflectivity (XRR) is usefull tool to estimate surface and interface roughness. In the conventional XRR analysis, the reflectivity is calculated based on the Parratt formalism, accounting for the effect of roughness by the theory of Nevot-Croce. However, the calculated results have shown often strange behavior due to the fact that the diffuse... Show More
  • The Real Universe

    Edwin Zong

    Issue: Volume 3, Issue 2, March 2015
    Pages: 25-32
    Received: Feb. 13, 2015
    Accepted: Feb. 26, 2015
    Published: Mar. 04, 2015
    Downloads:
    Views:
    Abstract: The findings of strong gravitational lensing by Sgr A* indicate gravitation power/energy exist in the center of our milky way, though it is invisible. The presence of energy equal presence of mass (M= E/C², C² is constant). However, current perception of particles can be massless e.g. gauge bosons, the photon and the gluon⑴ which create a centerpie... Show More
  • Phase Formation and Crystallinity-Dependent Magnetic Parameters of Co1-xFe2+xO4 Nanoparticals

    Nahed Makram Eyssa, Hanan Hassan Hantour, Kamilia Sdeek Abdo

    Issue: Volume 3, Issue 2, March 2015
    Pages: 33-38
    Received: Dec. 14, 2014
    Accepted: Jan. 29, 2015
    Published: Mar. 04, 2015
    Downloads:
    Views:
    Abstract: Nano crystalline cobalt ferrite CoFe2O4 powders were synthesized using the coprecipitation method. The effect of the calcination temperature and the Fe3+/Co2+ molar ratio on the phase formation, macro and microstructure and magnetic properties was studied systematically. The Fe3+/Co2+ was controlled to equal 2 and 2.75 while the annealing temperatu... Show More
  • A Review on Cuprate Based Superconducting Materials Including Characteristics and Applications

    Md. Atikur Rahman, Md. Zahidur Rahaman, Md. Nurush Samsuddoha

    Issue: Volume 3, Issue 2, March 2015
    Pages: 39-56
    Received: Feb. 02, 2015
    Accepted: Feb. 19, 2015
    Published: Mar. 04, 2015
    Downloads:
    Views:
    Abstract: A general review on cuprate based superconducting materials has been made. The special features of cuprate based high-temperature superconductors have been explained from the material side and the physical properties side. The present statuses on applications of cuprate based high-temperature superconductors have been included. In this paper, all c... Show More
  • Study of Decoupling Effects on SUSY Higgs Sector

    Partha Pratim Pal

    Issue: Volume 3, Issue 2, March 2015
    Pages: 57-59
    Received: Feb. 15, 2015
    Accepted: Mar. 04, 2015
    Published: Mar. 16, 2015
    Downloads:
    Views:
    Abstract: The most likely scenario in the light of Higgs discovery is the decoupling limit in the MSSM Higgs sector. The decoupling limit in MSSM occurs when the pseudoscalar mass is large (i.e.mA» mZ ), then the CP-even (H0), CP-odd (A0) and charged (H±) Higgs are mass degenerate and the lightest CP-even Higgs boson (h) mimics the signature of the SM Higgs ... Show More
  • Linear Momentum Conservation in the Motion of Electric Charges

    Farrin Payandeh

    Issue: Volume 3, Issue 2, March 2015
    Pages: 60-62
    Received: Feb. 13, 2015
    Accepted: Mar. 19, 2015
    Published: Mar. 24, 2015
    Downloads:
    Views:
    Abstract: In this letter I will discuss the linear momentum conservation for an electric charge which is moving in a magnetic field. This will enrich the knowledge of undergraduate physics students, about the important concept of conservation of linear momentum, in classical electrodynamics.
  • Calculation of Higgs Self-Coupling Constant for One-Loop and Two-Loop Effective Potentials and Their Perturbative Validity

    Partha Pratim Pal

    Issue: Volume 3, Issue 2, March 2015
    Pages: 63-66
    Received: Mar. 04, 2015
    Accepted: Mar. 18, 2015
    Published: Mar. 24, 2015
    Downloads:
    Views:
    Abstract: Although the Standard Model has been very successful in explaining the present data, it is unable to express the value of Higgs self coupling constant. It is a free parameter of the theory. Recently a Higgs like particle is reported to be discovered at CMS and ATLAS experiments at CERN LHC with a mass of about 125 GeV. The purpose of this paper is ... Show More