Whistler waves produced by a modulated electron beam: Electromagnetic fields in the linear approach

1995 ◽  
Vol 2 (11) ◽  
pp. 4297-4306 ◽  
Author(s):  
A. Volokitin ◽  
C. Krafft ◽  
G. Matthieussent
Keyword(s):  
Electron Beam ◽  
Electromagnetic Fields ◽  
Whistler Waves ◽  
Linear Approach

Whistler waves produced by a modulated spiraling electron beam: Linear approach

1996 ◽  
Vol 3 (3) ◽  
pp. 1120-1129 ◽  
Author(s):  
C. Krafft ◽  
A. Volokitin ◽  
G. Matthieussent
Keyword(s):  
Electron Beam ◽  
Whistler Waves ◽  
Linear Approach

Interaction of an electron beam with whistler waves in magnetoplasmas-reinvestigated

Optik ◽  
2020 ◽  
Vol 220 ◽  
pp. 165043 ◽  
Author(s):  
Suresh Chandra ◽  
Mohit Kumar Sharma
Keyword(s):  
Electron Beam ◽  
Whistler Waves

Injection of 40-kHz-modulated electron beam from the satellite: II. Excitation of electrostatic and whistler waves

2020 ◽  
Vol 65 (1) ◽  
pp. 30-49
Author(s):  
N. Baranets ◽  
Yu. Ruzhin ◽  
V. Dokukin ◽  
M. Ciobanu ◽  
H. Rothkaehl ◽  
...  
Keyword(s):  
Electron Beam ◽  
Whistler Waves

scholarly journals Coherent amplitude modulation of electron-beam-driven Langmuir waves

2013 ◽  
Vol 31 (4) ◽  
pp. 633-638 ◽  
Author(s):  
K. Baumgärtel
Keyword(s):  
Electron Beam ◽  
Amplitude Modulation ◽  
Linear Analysis ◽  
Uniform Domain ◽  
Periodic Modulation ◽  
Langmuir Waves ◽  
Plasma Oscillations ◽  
Plasma Interaction ◽  
Particle In Cell ◽  
Linear Approach

Abstract. A linear approach to the phenomenon of irregular amplitude modulation of beam-driven Langmuir waves, developed in a previous paper, is extended to explain periodic modulation as well. It comes about by beating of the fastest growing mode of the instability with beam-aligned plasma oscillations. They are naturally generated in a uniform domain of beam–plasma interaction prior to the onset of the instability. Particle-in-cell (PIC) simulations support the results of the linear analysis.

scholarly journals New aspects of whistler waves driven by an electron beam studied by a 3-D electromagnetic code

1994 ◽  
Vol 21 (11) ◽  
pp. 1019-1022 ◽  
Author(s):  
Ken-Ichi Nishikawa ◽  
Oscar Buneman ◽  
Torsten Neubert
Keyword(s):  
Electron Beam ◽  
Whistler Waves

Interaction of a density modulated electron beam with a magnetized plasma: Emission of whistler waves

1994 ◽  
Vol 1 (7) ◽  
pp. 2163-2171 ◽  
Author(s):  
C. Krafft ◽  
G. Matthieussent ◽  
P. Thévenet ◽  
S. Bresson
Keyword(s):  
Electron Beam ◽  
Magnetized Plasma ◽  
Plasma Emission ◽  
Whistler Waves

scholarly journals Low-frequency Whistler Waves Modulate Electrons and Generate Higher-frequency Whistler Waves in the Solar Wind

2021 ◽  
Vol 923 (2) ◽  
pp. 216
Author(s):  
S. T. Yao ◽  
Q. Q. Shi ◽  
Q. G. Zong ◽  
A. W. Degeling ◽  
R. L. Guo ◽  
...  
Keyword(s):  
Solar Wind ◽  
Electromagnetic Fields ◽  
Low Frequency ◽  
Space Physics ◽  
Lower Hybrid ◽  
High Temporal Resolution ◽  
Modulation Amplitude ◽  
Whistler Waves ◽  
Direction Parallel ◽  
Background Magnetic Field

Abstract The role of whistler-mode waves in the solar wind and the relationship between their electromagnetic fields and charged particles is a fundamental question in space physics. Using high-temporal-resolution electromagnetic field and plasma data from the Magnetospheric MultiScale spacecraft, we report observations of low-frequency whistler waves and associated electromagnetic fields and particle behavior in the Earth’s foreshock. The frequency of these whistler waves is close to half the lower-hybrid frequency (∼2 Hz), with their wavelength close to the ion gyroradius. The electron bulk flows are strongly modulated by these waves, with a modulation amplitude comparable to the solar wind velocity. At such a spatial scale, the electron flows are forcibly separated from the ion flows by the waves, resulting in strong electric currents and anisotropic ion distributions. Furthermore, we find that the low-frequency whistler wave propagates obliquely to the background magnetic field ( B 0), and results in spatially periodic magnetic gradients in the direction parallel to B 0. Under such conditions, large pitch-angle electrons are trapped in wave magnetic valleys by the magnetic mirror force, and may provide free perpendicular electron energy to excite higher-frequency whistler waves. This study offers important clues and new insights into wave–particle interactions, wave generation, and microscale energy conversion processes in the solar wind.

Spiral electron beam interaction with whistler waves at cyclotron resonances

2001 ◽  
Vol 8 (11) ◽  
pp. 4960-4971 ◽  
Author(s):  
A. S. Volokitin ◽  
C. Krafft
Keyword(s):  
Electron Beam ◽  
Whistler Waves ◽  
Beam Interaction

scholarly journals Whistler Waves Emitted by a Thin Modulated Electron Beam

1995 ◽  
Vol 05 (C6) ◽  
pp. C6-79-C6-83 ◽  
Author(s):  
A. Volokitin ◽  
C. Krafft ◽  
G. Matthieussent
Keyword(s):  
Electron Beam ◽  
Whistler Waves
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