American Journal of Physics and Applications

Volume 5, Issue 6, November 2017

  • A Method for Deriving Quantum Dynamic Equations from Classical Mechanics

    Hua Ma

    Issue: Volume 5, Issue 6, November 2017
    Pages: 80-83
    Received: Aug. 14, 2017
    Accepted: Sep. 06, 2017
    Published: Oct. 11, 2017
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    Abstract: Based on the operator theories and Hamiltonian canonical equation, an operator based quantum dynamics equation is established, which has the same effect as the Hamiltonian equation in describing the state evolution of quantized dynamical systems. As the reasonable verification of this equation, Schrodinger equation can be derived theoretically, and... Show More
  • Connection of Thermopower, Magneto Thermopower with Resistivity and Magnetoresistivity in Nd(1-x)SrxMnO3 and Sm(1-x)SrxMnO3 Manganites

    Liudmila Koroleva, Ivan Batashev, Artem Morozov, Anatol Balbashov, Henryk Szymczak, Anna Slawska-Waniewska, Sabina Lewinska

    Issue: Volume 5, Issue 6, November 2017
    Pages: 84-90
    Received: Aug. 27, 2017
    Accepted: Sep. 15, 2017
    Published: Oct. 13, 2017
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    Abstract: An experimental study of thermopower, magneto thermopower, magnetoresistivity and magnetization of Nd(1-x)SrxMnO3 and Sm(1-x)SrxMnO3 with 0 ≤ х ≤ 0.3 was conducted. A steep rise of thermopower as well as giant values of magneto thermopower and magnetoresistivity were observed near Curie temperature ТС in compounds with 0.15 ≤ х ≤ 0.3. O... Show More
  • Research on Calibration Method of 7kV Single Voltage Pulse for IGBT Models Test System

    Liu Chong, Li Jie, Kan Jingsong

    Issue: Volume 5, Issue 6, November 2017
    Pages: 91-94
    Received: Aug. 25, 2017
    Accepted: Sep. 27, 2017
    Published: Oct. 20, 2017
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    Abstract: Power IGBT module is widely used in high power conversion applications in various fields because of the advantages of high voltage and high current applications. In order to avoid the influence of temperature rise to the device measurement, pulse test method is widely used to test its static and dynamic parameters, So there are single high pulse vo... Show More
  • Study on Compression of ICF Fuel in Rocket Model

    Vijay Kumar Jha

    Issue: Volume 5, Issue 6, November 2017
    Pages: 95-98
    Received: Aug. 21, 2017
    Accepted: Sep. 11, 2017
    Published: Oct. 20, 2017
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    Abstract: Compression of Inertial Confinement Fusion (ICF) fuel as required by Lawson Criterion has been of immense value in ICF studies. In this work, the order of compression has been studied on Rocket Model because a high-order reaction force responsible for compression may be seen to act as a rocket motion. It has been seen that the order of compression ... Show More
  • Simulation of Multipacting with Space Charge Effect

    Gennady Romanov

    Issue: Volume 5, Issue 6, November 2017
    Pages: 99-105
    Received: Aug. 11, 2017
    Accepted: Sep. 25, 2017
    Published: Nov. 06, 2017
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    Abstract: The electron multiplication on surfaces exposed to an oscillating electromagnetic field causes the phenomenon of multipacting, which can degrade significantly the performance of vacuum RF devices, especially accelerating cavities. It is a serious obstacle to be avoided for normal operation of particle accelerator and their RF components. Many types... Show More
  • The Method of Calculating the Spectral Sensitivity of Solar Cells

    Krutikov Vladimir Nikolaevich, Parfentiev Nikolay Andreevich

    Issue: Volume 5, Issue 6, November 2017
    Pages: 106-108
    Received: Jun. 22, 2017
    Accepted: Jul. 05, 2017
    Published: Nov. 08, 2017
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    Abstract: A new method for calculation the spectral sensitivity of solar cells based on data obtained by measurement of differential sensitivity. As follows from the conducted analysis, measurements of cells can be carried out only at a constant spectral composition of background radiation. In particular with a single powerful lamp is repositionable relative... Show More
  • A Singular Point in the Characteristics of the Serial RLC Circuit

    Parfentiev Nikolay Andreevich, Parfentieva Natalia Andreevna

    Issue: Volume 5, Issue 6, November 2017
    Pages: 109-112
    Received: Aug. 18, 2017
    Accepted: Sep. 04, 2017
    Published: Nov. 08, 2017
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    Abstract: It is shown that the frequency characteristics of the RCL serial circuit have a special point at which the modulus of the complex resistance is not dependent on resistance. Is investigated the existence region of the real model of the serial circuit. A comparison of different schemes of resonant circuit is provided. Is reviewed previously unknown p... Show More
  • Elastic Electron Scattering from 88Sr and 89Y Nuclei

    Sara Shaker Mutor, Altaf Abdul Majeed Al-Rahmani

    Issue: Volume 5, Issue 6, November 2017
    Pages: 113-119
    Received: Oct. 08, 2017
    Accepted: Oct. 20, 2017
    Published: Nov. 24, 2017
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    Abstract: The ground state proton momentum distributions and elastic charge form factors for 88Sr and 89Y nuclei have been derived and studied using the Coherent Density Fluctuation Model and formulated by means of the fluctuation function (weight function) |f(x)|2 The fluctuation function has been connected to the charge density distribution of the nuclei a... Show More
  • Filling with the Graphene Nanoplates as a Way to Improve Properties of Epoxy-Composites for Industrial and Geophysical Machinery

    Dmitro Starokadomsky, Anatoly Ishenko, Maria Reshetnyk

    Issue: Volume 5, Issue 6, November 2017
    Pages: 120-125
    Received: Nov. 11, 2017
    Accepted: Dec. 05, 2017
    Published: Jan. 03, 2018
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    Abstract: It is established that the filling with graphenes increases (by 1.3-1.8 times) the strength at normal adhesion to steel. At same time, filling reduces the compressive strength and abrasion resistance and also resistance to aggressive liquids (conc. nitric acid, chloromethylene; mixture acetone-ethylacetate). The most probable reason for this may be... Show More