Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"wave-particle interactions"”.
-
Wave-particle interactions in the solar wind and solar flares
<p>Resonant interactions between particles and plasma waves play an important role in both the solar wind and solar flares. The dynamics of plasma turbulence in these settings controls the strength of the interactions, by determining the amplitudes of the small-scale electromagnetic fluctuations …
-
Analysis of wave-particle interactions in a beam plasma system
Submitted by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-04-19T21:35:39Z No. of bitstreams: 1 1974_winske.pdf: 5484975 bytes, checksum: 7a34a5388d0ccccc4a5eb68ad137fc0e (MD5)
-
Wave-particle interactions and the dynamics of the solar wind.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Physics.
-
Experimental study of wave-particle interactions in a beam-plasma system
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-04-22T20:39:41Z No. of bitstreams: 1 1975_taylor.pdf: 2603581 bytes, checksum: 6f514d312a0be59d2f3d34753c73e36b (MD5)
-
STABILITY OF UPGOING AURORAL ION BEAMS AT 33 R(E) (PLASMA, MAGNETOSPHERE, WAVE-PARTICLE INTERACTIONS)
… ions having been decelerated. This suggests wave-particle interactions at lower altitudes enabled the transfer of energy from the hydrogen to the oxygen. Maxwellian fits to the beam distributions are used to study the stability of the beams with respect to various low frequency …
-
Electron acceleration and loss caused by wave-particle interactions in the Van Allen radiation belts
… the interaction between electrons and plasma waves. The most important plasma waves are chorus, plasmaspheric hiss, and EMIC waves. Here, new statistical models of the diffusion coefficients for these waves are presented, which considerably improve existing models. Among others, they benefit …
-
Harmonic generation and parametric excitation in a beam-plasma system
Harmonic generation by wave-wave and wave-particle interactions and parametric excitation of plasma and ion-acoustic waves by a beam-plasma instability are studied, theoretically and experimentally, in a cold beam-plasma system. The dispersion relations for plasma and ion-acoustic waves are …
-
Remote sensing of Jupiter's magnetospheric dynamics
… hot plasma injections. It was suggested that wave-particle interactions are responsible for the scattering of electrons in this region. A third study investigated the auroral response to co-rotating interaction regions and solar wind compression. It was shown that in there are both high …
-
Modeling of Outer Radiation Belt Electron Scattering due to Spatial and Spectral Properties of ULF Waves
The research presented in this thesis covers wave-particle interactions for relativistic (0.5-10 MeV) electrons in Earth's outer radiation belt (r = 3-7 RE, or L-shells: L = 3-7) interacting with magnetospheric Pc-5 (ULF) waves. This dissertation focuses on ideal models for short and long term …
-
Controlled precipitation of energetic Van Allen belt protons by electromagnetic ion cyclotron (EMIC) waves : scientific and engineering implications
… storms, cosmic rays and other processes. These particles can rapidly damage the space systems orbiting the inner region, limiting access to Low Earth Orbit (LEO). Decades of modeling and observations, however, show that naturally generated ULF/VLF waves have the capability of precipitating …
-
Occurrence Statistics and Driving Mechanisms of Ionospheric Ultra-Low Frequency Waves Observed by SuperDARN Radars
Ultra-low frequency (ULF; 1 mHz - 1 Hz) waves are known to play an important role in the transfer of energy from the solar wind to Earth's magnetosphere and ionosphere. The Super Dual Auroral Radar Network (SuperDARN) is an international network consisting of 35 low-power high frequency (HF: 3-30 …
-
Nonlinear Evolution of Mirror Instability in the Earth's Magnetosheath in PIC Simulations
… of mirror instability using expanding box Particle-in-Cell simulations. We change the plasma conditions by artificially enlarging the simulation box over time to make the plasma mirror stable and investigate the final nonlinear state of the mirror structures. We show that the direct …
-
Understanding how low energy electrons control the variability of the Earth's electron radiation belts
… On the timeframe of hours, both the energy and particle flux of the radiation belts can change by orders of magnitude. Variations in the high energy relativistic electron flux depend on transport, acceleration, loss processes, and importantly, on the lower energy seed (10s – 100s keV) …
-
Impacts of Anisotropy, Wave Heating, and Neutral Winds on High-Latitude Ionospheric Dynamics
… transverse ion acceleration by broadband ELF waves can give the upflowing ions sufficient energy for the mirror force to propel these ions to escape into the magnetosphere (ion outflow). In order to accurately examine the connection between upflow and outflow processes, a new two dimensional, …