Edl Schamiloglu
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View article: An optimized design for an X-band high power relativistic diffraction output A8 magnetron
An optimized design for an X-band high power relativistic diffraction output A8 magnetron Open
Results of Particle in Cell simulations of an optimized design of a diffraction output relativistic A8 magnetron operating as a high power microwave (HPM) source in X-band (8.77 GHz) are presented. In addition to the very high efficiency o…
View article: Anomalous‐Energy Runaway Electrons Originating in Fast Ionisation Wave During Pulsed Gas Breakdown
Anomalous‐Energy Runaway Electrons Originating in Fast Ionisation Wave During Pulsed Gas Breakdown Open
Anomalous‐energy runaway electrons (RAEs), whose energy exceeds the maximum potential difference across the discharge gap, are widely observed in various plasma phenomena. This study investigates the origination of anomalous‐energy RAEs in…
View article: Advancing EMC Analysis With GAN-Driven Signal Classification and Waveform Modulation
Advancing EMC Analysis With GAN-Driven Signal Classification and Waveform Modulation Open
This study advances Electromagnetic Compatibility (EMC) by investigating how electromagnetic interference (EMI) from Radio Frequency (RF) sources affects digital interconnects. Unlike traditional analyses centered on Continuous Wave (CW) s…
View article: Material Characterization Study of Magnetite Nanocrystals for RF Sensing
Material Characterization Study of Magnetite Nanocrystals for RF Sensing Open
Magnetite nanocrystals show promise for electrically small gigahertz frequency applications, which could lead to miniaturizing transformer cores and new sensing technologies. This work presents a rigorous radiofrequency characterization of…
View article: Rapid Prototyping for Nanoparticle-Based Photonic Crystal Fiber Sensors
Rapid Prototyping for Nanoparticle-Based Photonic Crystal Fiber Sensors Open
The advent of nanotechnology has motivated a revolution in the development of miniaturized sensors. Such sensors can be used for radiation detection, temperature sensing, radio-frequency sensing, strain sensing, and more. At the nanoscale,…
View article: The field theory of collective Cherenkov radiation associated with electron beams
The field theory of collective Cherenkov radiation associated with electron beams Open
Classical Cherenkov radiation is a celebrated physics phenomenon of electromagnetic (EM) radiation stimulated by an electric charge moving with constant velocity in a three-dimensional dielectric medium. Cherenkov radiation has a wide spec…
View article: A Novel Binary Particle Swarm Algorithm Based Topology Optimization Method for Coaxial to Waveguide Transition
A Novel Binary Particle Swarm Algorithm Based Topology Optimization Method for Coaxial to Waveguide Transition Open
Topology optimization is a state-of-the-art tool for detecting the best material layout in a physical space to obtain certain goals. Initially developed as a structural engineering tool, it has been recently used in electromagnetics and ha…
View article: The Field Theory of Collective Cherenkov Radiation Associated with Electron Beams
The Field Theory of Collective Cherenkov Radiation Associated with Electron Beams Open
Classical Cherenkov radiation is a celebrated physics phenomenon of electromagnetic (EM) radiation stimulated by an electric charge moving with constant velocity in a three dimensional dielectric medium. Cherenkov radiation has a wide spec…
View article: Guest Editorial Special Issue—Golden Anniversary of TPS
Guest Editorial Special Issue—Golden Anniversary of TPS Open
In Late 2021, Dr. Steven Gitomer, the Editor-in-Chief of IEEE Transactions on Plasma Science (TPS), approached me about organizing a Golden Anniversary Special Issue of TPS (I am the Guest Editor for review articles for the journal). This …
View article: Mechanisms and Modeling of High Pressure Breakdown Physics in Ultra-Zero Air
Mechanisms and Modeling of High Pressure Breakdown Physics in Ultra-Zero Air Open
In the high-pressure regime above 300-500 psig, voltage-breakdown models such as the Paschen's law fail [1]. Below 300 psig the $E/p$ values suggest that the breakdown mechanism, specifically at high $E/p$ values is dominated by the ioniza…
View article: Characterizing the high-power-microwaves radiated by an axial output compact S-band A6 segmented magnetron fed by a split cathode and powered by a linear induction accelerator
Characterizing the high-power-microwaves radiated by an axial output compact S-band A6 segmented magnetron fed by a split cathode and powered by a linear induction accelerator Open
In a recent publication [J. Appl. Phys. 131, 023301 (2022)], microwave generation by a segmented A6 S-band axial output relativistic magnetron (RM) fed by a split cathode and powered by a small pulsed power generator was demonstrated for t…
View article: Diocotron and electromagnetic modes in split-cathode fed relativistic smooth bore and six-vane magnetrons
Diocotron and electromagnetic modes in split-cathode fed relativistic smooth bore and six-vane magnetrons Open
In this article, the diocotron modes developing in a coaxial diode and the resonant magnetron modes forming in a six-vane A6 relativistic magnetron both fed by a split cathode are studied by Particle-in-Cell simulations. The split cathode …
View article: Towards Stable Interstellar Flight: Levitation of a Laser-Propelled Sailcraft
Towards Stable Interstellar Flight: Levitation of a Laser-Propelled Sailcraft Open
Exploring and traveling to distant stars has long fascinated humanity but has been limited due to the vast distances. The Breakthrough Starshot Program aims at eliminating this limitation by traveling to Alpha Centauri, which is 4.37 light…
View article: Multiple electron beam generation with different energies and comparable currents from a single cathode potential for high power traveling wave tubes (TWTs)
Multiple electron beam generation with different energies and comparable currents from a single cathode potential for high power traveling wave tubes (TWTs) Open
We present a technique for generating multiple electron beams with different energies and comparable currents from a single cathode stalk at a single potential using nested magnetically insulated coaxial diodes (MICDs). The application is …
View article: Material Selection for Axial Magnetization of a Gyromagnetic NLTL for Space Applications
Material Selection for Axial Magnetization of a Gyromagnetic NLTL for Space Applications Open
Nonlinear Transmission Lines (NLTLs) are a new technique for radio frequency (RF) generation. A loaded ferrite NLTL, known as a gyromagnetic line, uses a solenoid to provide an external magnetic bias. In space applications, specifically in…
View article: Application of High-Frequency Leakage Current Model for Characterizing Failure Modes in Digital Logic Gates
Application of High-Frequency Leakage Current Model for Characterizing Failure Modes in Digital Logic Gates Open
In this paper, a predictive model is developed to characterize the impact of high-frequency electromagnetic interference (EMI) on the leakage current of CMOS integrated circuits. It is shown that the frequency dependence can be easily desc…
View article: Mode control by rearrangement of the slow wave structure in a 12-cavity relativistic magnetron with diffraction output using single-stepped cavities driven by a transparent cathode
Mode control by rearrangement of the slow wave structure in a 12-cavity relativistic magnetron with diffraction output using single-stepped cavities driven by a transparent cathode Open
We present the design of an agile slow wave structure for a “crab-like” A12 relativistic magnetron with diffraction output using single-stepped cavities. By regrouping the interaction region as three sets of four cavities, the TE31 operati…
View article: Metamaterial-Inspired Vacuum Electron Devices and Accelerators
Metamaterial-Inspired Vacuum Electron Devices and Accelerators Open
Metamaterials (MTMs) are structured materials with subwavelength features that can be engineered to have some unique properties not found in nature, such as negative refractive index, reversed Doppler effect, and reversed Cherenkov radiati…
View article: Short‐pulse HPM measurements using a resistive sensor
Short‐pulse HPM measurements using a resistive sensor Open
Resistive sensors for WRD250 and WRD750 double ridged waveguides are developed. Using the developed sensors, short high power microwave (HPM) pulses covering frequency ranges 2.6–7.8 and 7.5–18 GHz can be measured directly. The novelty of …
View article: Operating characteristics of a clamp klystron oscillator with a sloping cavity at W-band
Operating characteristics of a clamp klystron oscillator with a sloping cavity at W-band Open
We present the design of an oscillator that is an evolution of our previously proposed “clamp klystron.” In this new embodiment, we utilize sloping cavities and increase the operating frequency to 94 GHz and 100 GHz (W-band). In this study…
View article: Review of the relativistic magnetron
Review of the relativistic magnetron Open
The cavity magnetron is the most compact, efficient source of high-power microwave (HPM) radiation. The imprint that the magnetron has had on the world is comparable to the invention of the nuclear bomb. High- and low-power magnetrons are …
View article: A Hamilton-Jacobi Equation for Evaluating EEMI Propagation in a Computing System
A Hamilton-Jacobi Equation for Evaluating EEMI Propagation in a Computing System Open
In this paper, we present a theoretical framework for modeling the empirically observed cascading of software failures on a complicated computing system exposed to extreme electromagnetic interference (EEMI). Our approach is to treat the t…
View article: A multibeam metamaterial backward wave oscillator
A multibeam metamaterial backward wave oscillator Open
Microwave sources transform the kinetic energy of an electron beam into microwaves through the interaction of electrons with a periodic slow wave structure (SWS). A metamaterial (MTM) waveguide is proposed for use in a microwave oscillator…