7 papers
Resonant Pitch-Angle Scattering Of Runaway-Electrons by Externally-launched Helicon Waves in the DIII-D Tokamak
Hari Choudhury, Jeffrey Lestz, Carlos Paz-Soldan +12
Resonant wave-particle interactions between externally launched helicon waves (also known as whistler waves) and runaway electrons (REs) have been demonstrated on the DIII-D tokama…
Wave-Energy Partition Governs Weak Collisional Damping in Cold Plasmas
Yanzeng Zhang, Xianzhu Tang, Ge Zhuang
Weak dissipation can control wave propagation, mode competition, and instability thresholds in plasmas, yet the physical origin of large branch-to-branch differences in collisional…
Self-mediation of runaway electrons via self-excited wave-wave and wave-particle interactions
Qile Zhang, Yanzeng Zhang, Qi Tang +1
Nonlinear dynamics of runaway electron induced wave instabilities can significantly modify the runaway distribution critical to tokamak operations. Here we present the first-ever f…
Excitation of whistler and slow-X waves by runaway electrons in a collisional plasma
Qile Zhang, Yanzeng Zhang, Xian-Zhu Tang
Runaway electrons are known to provide robust ideal or collisionless kinetic drive for plasma wave instabilities in both the whistler and slow-X branches, via the anomalous Doppler…
Collisionless ablative plasma shocks
Yanzeng Zhang, Xian-Zhu Tang
An ablative plasma shock can emanate from the interface between a cold/dense plasma and a hot/dilute ambient plasma, where the plasma mean-free-path is much longer than the tempera…
Distinct parallel electrostatic collisionless shocks in hot-cold ablative mixing plasmas
Yanzeng Zhang, Xian-Zhu Tang
Hot-cold ablative mixing plasmas are ubiquitous in astrophysical and laboratory systems, where a cold/dense plasma is roughly in pressure balance with a hot/dilute plasma. Examples…