World Journal of Applied Physics

Volume 5, Issue 1, March 2020

  • Angular Distribution and Polarization of Superradiant Emission from Atomic Ensembles

    Verne Louis Jacobs

    Issue: Volume 5, Issue 1, March 2020
    Pages: 1-14
    Received: 1 March 2020
    Accepted: 13 March 2020
    Published: 1 April 2020
    Abstract: A density-matrix approach is developed to provide a theoretical description of the intensity, angular distribution, and polarization of superradiative emission from an ensemble of many-electron atomic systems. The many-electron atomic systems are described as cooperatively interacting by means of forces that can be long range. Particular emphasis i... Show More
  • Refining the Results of the Electronic Theory of Reflection of Metals

    Konstantin Ludanov

    Issue: Volume 5, Issue 1, March 2020
    Pages: 15-20
    Received: 26 May 2020
    Accepted: 5 June 2020
    Published: 4 July 2020
    Abstract: The article provides an accurate analytical approximation of the expressions of the known results of the electronic theory of reflection of metals, i.e. for the spectral and integrated reflectivity of and (Drude and Hagen-Rubens formulas, as well as the formulas of Ashkinass, Foote, Eckert and Drake, which are fragments of power series). Compact ... Show More