The Characteristic Frequency Behavior of the Non-Relative Plasma Medium Induced by Magnetic Field
Date Issued
2008
Date
2008
Author(s)
Cheng, Yi-Fen
Abstract
According to the previous studies, a large number of the half-space plasma research have been made. But it is little to know about that the relation between the characteristic frequency of plasma and the change of the mangetic field. This key point drives us to the question to develop this thesis. From the nondimensional fundamental equations, the non-dimensionalized parameters for the electromagnetic fields and the magneto-hydrodynamics have been made. Then, the fundamental solutions to the inner field perturbation for the plasma half-space have been showed in chapter 3. We solve the relation between the characteristic frequency of plasma and the perturbed mangetic fields from the non-dimensional dispersion equations. In Chapter 4 , we obtain the similar relation between the frequency and the magnetic field when we move the excitation out off the medium instantaneously. By doing the further discussion, the roles of the non-dimensional parameters in the whole model are indicated. The last subtopic which we also discuss in the thesis is the role of the density variable in the medium and the usable range. The minimum usable range is . And it is the threshold limit value (TLV) of the quasi-neutrality in the plasma medium. In conclusion, this mathematical and physical model can figure out the different micro-nano effects on the manufacture procedures or other research with proper parameters revised. By supplying the relation between the characteristic frequency of the plasma and the perturbed magnetic fields, this research will set the further steps in the future studies. And it can be used on the other application, such as the experiments or numerical simulations.
Subjects
Non-relative
Anisotropic
Half-space plasma
Non-dimensional parameters
Dispersion curve
Plasma frequency
Perturbed magnetic fields
Type
thesis
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