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JEMAA is a professional journal in the field of electromagnetic analysis, testing and application. The goal of this journal is to provide an international platform for engineers and academicians all over the world to promote, share, and discuss various new issues and developments in the field of electromagnetics. It i…
Belemdara Dingamadji Hilaire, Mbaïnaïbeye Jérôme, Guidkaya Golam
The paper presents our contribution to the full 3D finite element modelling of a hybrid stepping motor using COMSOL Multiphysics software. This type of four-phase motor has a permanent magnet interposed between the two identical and coaxial half stators. The…
Vernon Cooray, Gerald Cooray, Marcos Rubinstein, Farhad Rachidi
In Part I of this paper, an inequality satisfied by the vacuum energy density of the universe was derived using an indirect and heuristic procedure. The derivation is based on a proposed thought experiment, according to which an electron is accelerated to a c…
Vernon Cooray, Gerald Cooray, Marcos Rubinstein, Farhad Rachidi
In this paper, an inequality satisfied by the vacuum energy density of the universe is derived using an indirect and heuristic procedure. The derivation is based on a proposed thought experiment, according to which an electron is accelerated to a constant and…
Salama Abdelhady
When considering electromagnetism, the unit of the Ammeter’s measurement should be limited to its proper unit in “Watt/Volt” which is, according to physical principles, the division quotient of the measured electrical power by its electrical potential. Howeve…
Volodymyr Grimalsky, Jesus Escobedo-Alatorre, Christian Castrejon-Martinez, Yered Gomez-Badillo
It is theoretically investigated the generation of higher harmonics of two-dimensional and three-dimensional terahertz electromagnetic beams in nonlinear crystals. The attention is paid to crystalline paraelectrics like SrTiO 3 under the temperatures 60 - 200…
Vernon Cooray, Gerald Cooray, Marcos Rubinstein, Farhad Rachidi
Several recent publications show that the electromagnetic radiation generated by transmitting antennas satisfy the following universal conditions: The time domain radiation fields satisfy the condition A ≥ h /4π ? q ≥ e where A is the action of the radiation…
Mohamed Yaya Teya, Ousmane Sow, Khady Loum, Ibrahima Diatta, Gora Diop, Youssou Traore, Mamadou Wade, Gregoire Sissoko
The bifacial silicon solar cell subjected to a magnetic field, is illuminated by the back side by a monochromatic light in frequency modulation, with high absorption, At minority carriers diffusion coefficient resonance frequency, a graphical study of the exp…
Serigne Bira Gueye
The Radio Frequency Quadrupole (RFQ) accelerator invented by Kapchinskii and Tepliakov can focus, bunch, and accelerate charged-particle beams simultaneously. Typically, it operates at frequencies up to 500 MHz, for low particle velocities ( β < 0.12 ). The f…
Gora Diop, Ousmane Sow, Moustapha Thiame, Richard Mane, Ibrahima Diatta, Khady Loum, Sega Gueye, Mamadou Wade, Gregoire Sissoko
The diffusion coefficient of the minority charge carriers in the base of a silicon solar cell under temperature and subjected to a magnetic field, passes in reso-nance at temperature ( T opt ). For this same magnetic field, the diffusion coeffi-cient of the p…
Haiduke Sarafian
The I-V diagram of a tunnel diode inherits a voltage range corresponding to a specific current domain with a negative slope. Within this range, the electric resistance is negatively impacting the characteristics of the electric circuits. One such circuit cont…
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JEMAA is a professional journal in the field of electromagnetic analysis, testing and application. The goal of this journal is to provide an international platform for engineers and academicians all over the world to promote, share, and discuss various new issues and developments in the field of electromagnetics. It i… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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