Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apri16004s&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The project involves the study of low-density plasma into which dust particles are injected and ions are observed to orbit the charged dust particles. The characteristics of the plasma, which are normally determined with the use of a Langmuir Probe, must be investigated alternatively because of the plasma’s low density. The chamber in which the plasma is contained is a resonant cavity for EM waves. It is known that when a dielectric such as the plasma is placed within the cavity a shift in the resonant frequency for a given mode results. The amount of the frequency shift is a function of the plasma density. Therefore, if the frequency shift can be measured, the plasma density can be determined. The purpose of this project is to construct and test a copper cylinder to be used as a sleeve within the plasma chamber. The hope is that the copper sleeve will increase the Q value of the cylinder, which entertains more accurate measurements of the resonant frequencies. Currently, the cylinder needs to be tested to determine what oscillatory modes are present in the chamber.
Svoboda Aaron A.
Walch Robert
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