From the 2 of 8 linked papers with an AI index.
8 papers
Transitional evolution of the wave dispersion relation during helicon discharge ignition: an analytical theory from vacuum to steady operation
Lei Chang
The dispersion relations of the helicon and Trivelpiece--Gould (TG) waves in a steady, fully developed magnetised plasma column are well established, but the discharge does not beg…
First reduced model for integrated computations of helicon wave heating and current drive in magnetic fusion plasmas
Zi-Chen Kan, Lei Chang, Zhen-Yu Wang +9
The paper introduces a computationally efficient reduced model for helicon-wave radio-frequency heating and current drive in magnetic fusion plasmas, focusing on the dominant elect…
Full-Path Nonlinear Modeling of Microwave Power Transmission Through Ionospheric Plasma for Space Solar Power Station
Pengan Guo, Lei Chang, Yuhan Chen +5
Space Solar Power Station (SSPS) concepts rely on gigawatt-class microwave beams to carry orbital solar energy through the ionosphere, where the beam and the plasma form a coupled…
Fully nonlinear phenomenology of the bump-on-tail (BOT) instability with drag, diffusion and Krook relaxation
Shi-Jie Zhang, Lei Chang, Zhao-Ju Bo +8
Energetic-particle-driven modes in magnetically confined fusion plasmas often exhibit nonlinear frequency sweeping, reflecting complex wave-particle interactions near marginal stab…
Revealing the transient ionization dynamics and mode-coupling mechanisms of helicon discharge through a self-consistent multiphysics model
Jing-Jing Ma, Lei Chang, Ming-Yang Wu +6
Helicon plasma sources play a central role in applications ranging from material treatment to space propulsion and fusion, yet the physical processes governing their ignition, tran…
Plasma fibre using bright-core helicon plasma
Lei Chang, Zi-Chen Kan, Jing-Jing Ma +2
This paper reports an innovative concept of ``plasma fibre" using bright-core helicon plasma, inspired by its spatial and spectral similarities to the well-known optical fibre. The…