Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, USA.
Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Phys Rev Lett. 2019 Feb 1;122(4):045101. doi: 10.1103/PhysRevLett.122.045101.
A range of nonlinear wave structures, including Langmuir waves, unipolar electric fields, and bipolar electric fields, are often observed in association with whistler-mode chorus waves in near-Earth space. We demonstrate that the three seemingly different nonlinear wave structures originate from the same nonlinear electron trapping process by whistler-mode chorus waves. The ratio of the Landau resonant velocity to the electron thermal velocity controls the type of nonlinear wave structures that will be generated.
在近地空间中，与哨声模哨声波相关联的通常观察到一系列非线性波结构，包括朗缪尔波、单极电场和双极电场。我们证明，这三种看似不同的非线性波结构都源于哨声模哨声波的相同非线性电子俘获过程。朗道共振速度与电子热速度的比值控制着将产生的非线性波结构的类型。
