研究生: |
管維中 Guan Wei-Jung |
---|---|
論文名稱: |
微波表面波電漿中之電漿共振反應 Study of the Plasma Resonance in a Planar Surface Wave Microwave Plasma |
指導教授: |
寇崇善
Chwung-Shan Kou |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 物理學系 Department of Physics |
論文出版年: | 2000 |
畢業學年度: | 88 |
語文別: | 中文 |
論文頁數: | 49 |
中文關鍵詞: | 微波 、表面波 、電漿 、共振 、電漿振盪 |
外文關鍵詞: | Langmuir Probe, Plasma, Surface Wave, Resonance, EEDF, Microwave, Plasma Oscillation |
相關次數: | 點閱:3 下載:0 |
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當電漿振盪頻率與入射電磁波相同時,會發生共振,本研究使用微波電漿源系統,觀察到微波表面波與電漿共振形成之電場local極大,其位置只出現在一個特定的電漿密度,對應於所用的微波源頻率。共振所形成的電場高峰,高度正比於電漿密度的空間變化度,寬度則反比於電漿密度的空間變化度。
本研究以使用2.45GHz的微波源,用Langmuir Probe量測電子能量分佈(EEDF),以此計算電漿密度,以dipole antenna來量測微波場強。
Plasma has a specific oscillation called as Plasma Oscillation. When Plasma Oscillation and Electromagnetic wave have the same frequency, there exist a resonance between the plasma and the electromagnetic wave . In non-uniform Plasma, the electric field becomes a local maximum if the local plasma density is equal to the resonance density. In accordance with the theory, the measured maximum value of the resonance response is proportional to the plasma density gradient while the measured spatial width of the plasma resonance is inversely proportional to the plasma density gradient.
In this thesis, we use Langmuir probe to measure the characteristic of Plasma and use short dipole antenna to measure the amplitude of electromagnetic wave.
Reference:
[1] Michael A. Lieberman,Allan J. Lichtenberg "Principles of Plasma Discharges and Materials Processing"
[2] Dwight R. Nicholson "Introduction to Plasma Theory"
[3] T. J. Wu, C. S. Kou "A large-area plasma source excited by a tunable surface wave cavity" Review of Scientific Instruments (Vol. 70, No. 5, 1999)
[4] N. G. Denisov "On a Singularity of the Field of an Electromagnetic Wave Propagated in an Inhomogeneous Plasma" Soviet Physics JETP (vol. 4, Number 4, 1957)
[5] Dr. Irving L. Kosow "Microwave Theory and Measurements" (HP 1970)
[6] V. A. Godyak, R. B. Piejak, B. M. Alexandrovich "Probe Diagnostics of non-Maxwellian Plasmas" J. Appl. Phys. 73(8),1995
[7] Fumiyuki Fujita ,Hatsuo Yamazaki "Determination of Electron Energy Distribution Function of Plasma by Digital Processing from Langmuir Probe Characteristic" Japanese Journal of Applie Physics (Vol. 29, No. 10. 1990. 2139-2144)
[8] Francis F. Chen "Plasma Diagnostic Techniques chap. 4"
[9] Yu. M. Kagan,V. I. Perel "Probe Methods in Plasma Research",Soviet Physics Uspekhi (Russian Vol. 81. Nos. 3-4 1964)
[10] Chang L. Tien,John H. Lienhard "Statistical Thermodynamics"
[11] Yuri P. Raizer "Gas Discharge"
[12] J. D. Jackson "Classical Electrodynamics 2ed" (ISBN 047143132X)