3 papers
math-ph2026
Floquet Theory of the LC Circuit with Modulated Capacitance
Alexander Figotin
Parametric resonance -- periodic variation of a system parameter driving exponential growth of oscillations -- is among the most fundamental instabilities in physics and engineerin…
physics.plasm-ph2025
Super-exponential Amplification of Wavepacket Propagation in Traveling Wave Tubes
Kasra Rouhi, Filippo Capolino, Alexander Figotin
We analyze wavepacket propagation in traveling wave tubes (TWTs) analytically and numerically. TWT design in essence comprises a pencil-like electron beam in vacuum interacting wit…
physics.acc-ph2023
Factorized form of the dispersion relations of a traveling wave tube
Alexander Figotin
The traveling tube (TWT) design in a nutshell comprises of a pencil-like electron beam (e-beam) in vacuum interacting with guiding it slow-wave structure (SWS). In our prior studie…