Fourier representation of the energy distribution of an electromagnetic field scattered by spherical particles

1975 ◽  
Vol 14 (10) ◽  
pp. 2486 ◽  
Author(s):  
Reiner Eiden
Keyword(s):  
Electromagnetic Field ◽  
Energy Distribution ◽  
Spherical Particles ◽  
Fourier Representation

Research on Electromagnetic Field Optimization for Microwave Hot Recycling of Asphalt Mixtures

2012 ◽  
Vol 462 ◽  
pp. 575-579 ◽  
Author(s):  
Tong Sheng Sun ◽  
Zhi Sheng Zhang ◽  
Ling Feng Tang
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Energy Distribution ◽  
Microwave Heating ◽  
Field Experiments ◽  
Heating System ◽  
Asphalt Mixtures ◽  
Electromagnetic Propagation ◽  
Recycled Asphalt ◽  
Electromagnetic Model

In order to investigate the law of electromagnetic propagation within microwave heating system, Maxwell's equations are applied to build electromagnetic model of recycled asphalt mixtures. Energy distribution of electromagnetic field in asphalt mixtures is researched based on the Poynting theory. The optimization model of electromagnetic field and structure are established by building relationship between electric field and magnetic field. Experiments of microwave heating allochroic silicagel are performed, which demonstrates the accuracy of electromagnetic field optimization.

scholarly journals Generation of Electromagnetic Field by Microtubules

2021 ◽  
Vol 22 (15) ◽  
pp. 8215
Author(s):  
Jan Pokorný ◽  
Jiří Pokorný ◽  
Jan Vrba
Keyword(s):  
Electromagnetic Field ◽  
Energy Distribution ◽  
Biological Systems ◽  
Molecular Orbitals ◽  
General Mechanism ◽  
General Phenomenon ◽  
Coherent Signals ◽  
Equal Energy ◽  
Conduction Bands ◽  
Electric Dipoles

The general mechanism of controlling, information and organization in biological systems is based on the internal coherent electromagnetic field. The electromagnetic field is supposed to be generated by microtubules composed of identical tubulin heterodimers with periodic organization and containing electric dipoles. We used a classical dipole theory of generation of the electromagnetic field to analyze the space–time coherence. The structure of microtubules with the helical and axial periodicity enables the interaction of the field in time shifted by one or more periods of oscillation and generation of coherent signals. Inner cavity excitation should provide equal energy distribution in a microtubule. The supplied energy coherently excites oscillators with a high electrical quality, microtubule inner cavity, and electrons at molecular orbitals and in ‘semiconduction’ and ‘conduction’ bands. The suggested mechanism is supposed to be a general phenomenon for a large group of helical systems.

Electromagnetic field for a beam incident on two adjacent spherical particles

1991 ◽  
Vol 30 (33) ◽  
pp. 4706 ◽  
Author(s):  
J. P. Barton ◽  
W. Ma ◽  
S. A. Schaub ◽  
D. R. Alexander
Keyword(s):  
Electromagnetic Field ◽  
Spherical Particles ◽  
Beam Incident

A Hamiltonian formulation in the electrodynamics of charged moving fluids

1976 ◽  
Vol 15 (1) ◽  
pp. 49-56 ◽  
Author(s):  
I. Merches
Keyword(s):  
Electromagnetic Field ◽  
Point Charge ◽  
Hamiltonian Formulation ◽  
Conducting Fluid ◽  
Field Potentials ◽  
Fourier Representation ◽  
Definition Of

By using the concept of combined field, we present a simple and symmetric Hamiltonian formulation for an infinitely conducting fluid, moving in an electromagnetic field. The definition of the combined field potentials makes it possible to replace the interaction between the electromagnetic field and charges by an interaction between two fields. Some applications are made, to prove the theory (e.g. the Hamiltonian of a point charge, Fourier representation).

Energy Distribution in Electron Beams

1972 ◽  
Vol 30 ◽  
pp. 568-569
Author(s):  
Tamotsu Ohno
Keyword(s):  
Electron Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Integral Curve ◽  
Electron Beams ◽  
Electron Gun ◽  
Angular Divergence ◽  
Apparent Increase ◽  
Integral Width ◽  
The Cross

The energy distribution in an electron; beam from an electron gun provided with a biased Wehnelt cylinder was measured by a retarding potential analyser. All the measurements were carried out with a beam of small angular divergence (<3xl0-4 rad) to eliminate the apparent increase of energy width as pointed out by Ichinokawa.The cross section of the beam from a gun with a tungsten hairpin cathode varies as shown in Fig.1a with the bias voltage Vg. The central part of the beam was analysed. An example of the integral curve as well as the energy spectrum is shown in Fig.2. The integral width of the spectrum ΔEi varies with Vg as shown in Fig.1b The width ΔEi is smaller than the Maxwellian width near the cut-off. As |Vg| is decreased, ΔEi increases beyond the Maxwellian width, reaches a maximum and then decreases. Note that the cross section of the beam enlarges with decreasing |Vg|.

Sign in / Sign up

Export Citation Format

Share Document