Beam scattering and low-frequency fluctuations in a beam-driven strongly turbulent plasma

2001 ◽  
Vol 8 (1) ◽  
pp. 122-131 ◽  
Author(s):  
M. D. McFarland ◽  
A. Y. Wong
Keyword(s):  
Low Frequency ◽  
Turbulent Plasma ◽  
Beam Scattering ◽  
Frequency Fluctuations

Spontaneous low-frequency fluctuations in finger blood volume, measured by photoplethysmography

1995 ◽  
Author(s):  
Meir Nitzan ◽  
Anatoly Babchenko ◽  
Adina Milston ◽  
Boris Khanokh ◽  
Sergei Turivnenko
Keyword(s):  
Blood Volume ◽  
Low Frequency ◽  
Frequency Fluctuations

Foreshock ULF fluctuations near the Moon: THEMIS observations

2021 ◽  
Author(s):  
Anna Salohub ◽  
Jana Šafránková ◽  
Zdeněk Němeček
Keyword(s):  
Solar Wind ◽  
Rest Frame ◽  
Low Frequency ◽  
Solar Wind Plasma ◽  
Turbulent Plasma ◽  
Bow Shock ◽  
Ulf Waves ◽  
The Moon ◽  
Shock Surface ◽  
The Earth

<p>The foreshock is a region filled with a turbulent plasma located upstream the Earth’s bow shock where interplanetary magnetic field (IMF) lines are connected to the bow shock surface. In this region, ultra-low frequency (ULF) waves are generated due to the interaction of the solar wind plasma with particles reflected from the bow shock back into the solar wind. It is assumed that excited waves grow and they are convected through the solar wind/foreshock, thus the inner spacecraft (close to the bow shock) would observe larger wave amplitudes than the outer (far from the bow shock) spacecraft. The paper presents a statistical analysis of excited ULF fluctuations observed simultaneously by two closely separated THEMIS spacecraft orbiting the Moon under a nearly radial IMF. We found that ULF fluctuations (in the plasma rest frame) can be characterized as a mixture of transverse and compressional modes with different properties at both locations. We discuss the growth and/or damping of ULF waves during their propagation.</p>

Sign in / Sign up

Export Citation Format

Share Document