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Updated: Jun 18, 2025

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Identification of Coupled Landau and Anomalous Resonances in Space Plasmas
Jing-Huan Li1, Xu-Zhi Zhou1, Zhi-Yang Liu1,2
1School of Earth and Space Sciences, <a href="https://ror.org/02v51f717">Peking University</a>, Beijing 100871, China.
Abstract:
Wave-particle resonance, a ubiquitous process in the plasma universe, occurs when resonant particles observe a constant wave phase to enable sustained energy transfer. Here, we present spacecraft observations of simultaneous Landau and anomalous resonances between oblique whistler waves and the same group of protons, which are evidenced, respectively, by phase-space rings in parallel-velocity spectra and phase-bunched distributions in gyrophase spectra. Our results indicate the coupling between Landau and anomalous resonances via the overlapping of the resonance islands.
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