The finite-difference time-domain (FDTD) method has been extensively used to simulate
varieties of electromagnetic interaction problems. However, because of its Courant …

High power vacuum electronic devices of millimeter wave to terahertz regime are attracting
extensive interests due to their potential applications in science and technologies. In this …

We propose the concept of high-order mode extended interaction klystron (EIK) at the
terahertz band. Compared to the conventional fundamental mode EIK, it operates at the TM …

As crucial connecting components in steel bridge structures, high-strength bolts are
susceptible to corrosion from environmental factors such as corrosive agents in the air and …

We present a charge-conservative electromagnetic particle-in-cell (EM-PIC) algorithm
optimized for the analysis of vacuum electronic devices (VEDs) with cylindrical symmetry …

To increase the generation efficiency of the terahertz wave in the Y band, the idea of dual-
reflector is introduced in the relativistic surface wave oscillator (SWO) with large oversized …

A high performance continuous-wave (CW) backward wave oscillator (BWO) with planar
slow wave structure (SWS) and sheet electron beam in Y-band is presented in this paper …

The stability of the circuit and the tolerance during the manufacture process are theoretically
studied in the design of 0.34 THz extended interaction klystron, which are helpful to increase …

While finite-difference time-domain methods have long been the foundational basis for
particle-in-cell (PIC) codes, there has been increasing momentum in developing a suite of …

We present a data-driven reduced-order modeling of the space-charge dynamics for
electromagnetic particle-in-cell (EMPIC) plasma simulations based on dynamic mode …