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研究生:曲宏宇
研究生(外文):Hong-Yu Chu
論文名稱:強耦合微粒電漿中脈衝雷射引發電漿微泡
論文名稱(外文):Pulsed laser induced micro bubbles in strongly coupled Coulomb liquids
指導教授:伊林伊林引用關係
指導教授(外文):Lin I
學位類別:碩士
校院名稱:國立中央大學
系所名稱:物理研究所
學門:自然科學學門
學類:物理學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:67
中文關鍵詞:電漿孤立子脈衝雷射
外文關鍵詞:pulsed lasersolitondusty wavedusty plasma
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非線性引發的現象已經在不同的領域裡有了相當多的研究,在這篇的論文中以微粒電漿為背景及脈衝雷射為工具,來產生電漿微泡。
進而以電漿微粒做微觀測其電漿微泡的動力行為,首次以實驗中觀測到電漿孤立子的出現及運動行為,而在延續調控實驗參數使電漿中非線性的特性產生波動現象。


Nonlinearity-induced instability are observed in many different branches of physics. Also, strongly coupled coulomb clusters are contained richly nonlinear phenomena, which are well developed in past few years in our lab. Dust particles are negatively charged inside plasma, since electrons have higher mobility than ions in plasma. Therefore by introducing plume, which is generated by focused pulse laser into dusty plasma, we present a plasma bubble in the plasma system, which has long life time as cavitation bubble in water. To the extent of the system condition, instability waves are also observed.


Contents
1 Introduction . . . . . . . . . . . . . . . . . . 1
2 Background . . . . . . . . . . . . . . . . . . 5
2.1 Dusty plasma system . . . . . . . . . . . . . . . . 5
2.1.1 Dusty plasma structure . . . . . . . . . . . 6
2.1.2 Dusty plasma crystals and liquids . . . . . 8
2.1.3 Wave in plasma . . . . . . . . . . . . . . . 9
2.2 Bubble formation . . . . . . . . . . . . . . . . . . 10
2.2.1 Bubble generated by pulsed laser in water . . . . .11
2.2.2 Bubble generated in plasma by simulation . . . . .12
2.3 Laser - matter interaction . . . . . . . . . . . . . 14
2.3.1 Laser - solid interaction . . . . . . . . . . 14
2.3.2 Laser - liquid interaction . . . . . . . . . . 17
2.3.3 Laser - gas interaction . . . . . . . . . . . 17
3 Experiment . . . . . . . . . . . . . . . . . . 19
3.1 Experimental setup . . . . . . . . . . . . . . . . . 19
3.1.1 Plasma bubble formation setup . . . . . . 19
3.1.2 Operation condition . . . . . . . . . . . . 21
3.2 Data measurement . . . . . . . . . . . . . . . . . 23
3.2.1 Bottom voltage measurement . . . . . . . 23
3.2.2 Measurement for plasma bubble formation 24
4 Result and Discussion . . . . . . . . . . . . . . . . . . 25
4.1 Pulsed laser interaction with bottom plate . . . . 25
4.1.1 Space charge distribution after ablation . . 25
4.1.2 Pulsed laser - bottom interaction . . . . . 27
4.1.3 Summary . . . . . . . . . . . . . . . . . . 29
4.2 Pulsed laser interaction with dusty plasma . . . . 30
4.2.1 Overdamped bubble . . . . . . . . . . . . 31
4.2.2 Traveling bubble . . . . . . . . . . . . . . 32
4.2.3 Bubble induced wave formation . . . . . . 39
4.2.4 Spontaneous waves . . . . . . . . . . . . . 40
4.2.5 Summary . . . . . . . . . . . . . . . . . . 42
5 Conclusion . . . . . . . . . . . . . . . . . . 48


Bibliography[1] Ohan Baghdassarian et al. Liminescence characteristics of laser-induced bubbles in water. PRL., 83, 1999.[2] Ohan Baghdassarian et al. Spectrum of luminescence from laser-created bubbles in water. PRL., 86, 2001.[3] Thomas E. McGrath et al. Sonoluminescence initiated by laser irradiation of carbon suspensions. APL., 73, 1998.[4] Alfred Vogel etal. Role of laser-induced plasma formation in pulsed cellular microsurgery and micromanipulation. PRL., 88, 2002.[5] S.V. Bulanov et al. Solitonlike electronmagnetic waves behind a superindense laser pulse in a plasma. PRL., 82, 1999.[6] Y. Sentoku et al. Bursts of superreflected laser light form inhomogeneous plasmas due to the generation of relativistic solitary waves. PRL., 83, 1999.[7] A.A. Solodov etal. Plasma ions dynamics in the wake of a short laser pulse. PRL., 86, 2001.[8] S.V. Bulanov etal. Relativistic electromagnetic solitons in the electron-ion plasma. PRL., 86, 2001.[9] V.A. Vshivkov etal. Surface oscillations in overdense plasmas irradiated by ultrashort laser pulses. PRL., 87, 2001.[10] Lin I et al. Direct observation of coulomb crystals and liquids in strongly coupled rf dusty plasmas. PRL., 72, 1994.[11] Lin I et al. Microscopic particle motions in strongly coupled dusty plasmas. Science, 272, 1996.[12] R. Bharuthram and P.K.Shukla. Large-amplitude ionacoustic solitons in a dusty plasma. PLANETARY AND SPACE SCIENCE, 40, 1992.[13] P.K.Shukla etal. Amplitude-modulation of dust-lattice waves in a plasma crystal. PHYSICS OF PLASMAS, 5, 1998.[14] M.R. Gupta. E®ect of nonadiabaticity of dust charge variation on dust acoustic-waves - generation of dust acoustic shock-waves. PHYSICAL REVIEW E, 6304, 2001.[15] M.R. Gupta. E®ect of finite ion inertia and dust drift on small amplitude dust acoustic soliton. PLANETARY AND SPACE SCIENCE, 48, 2000.[16] N.N. Rao et al. E®ect of dust charge inhomogeneity on linear and nonlinear dust-acoustic wave-propagation. PHYSICS OF PLASMAS, 6, 1999.[17] N.N. Rao et al. Adiabatic dust-acoustic solitons. PHYSICS LETTERS A, 235, 1997.[18] B. Chapman. Glow discharge processes. John Wiley and Sons, New York, 1980.[19] J.M. Liu etal. Self-organized waves in annular rf magnetodusty-plasma. PRE., 62, 2000.[20] J.M. Liu etal. Strongly coupled dusty plasmas: crystals, liquids, clusters, and waves. Plasma phys. control fusion, 41, 1999.[21] Y.C. Wang etal. Self-organized oscillations of strongly coupled coulomb cluster in a plasma trap. PRE., 62, 2000.[22] G. E. Morfill etal. Condensed plasmas under microgravity. PRL., 83, 1999.[23] J. Goree etal. Instabilities in a dusty plasma with ion drag and ionization. PRE., 59, 1999.[24] J. C. Miller et al. Laser ablation. Springer-Verlag, 1994.[25] Walter W. Duley et al. Laser processing and analysis of materials. John Wiley and Sons, New York, 1983.[26] David B. Geohegan et al. Dynamics of laser ablation plume penetration through low pressure background gases. ARL., 67, 1995.[27] Riju C. Issac et al. Twin peak distribution of electron emmission profile and impact ionization of ambient molecules during laser ablation of silver target. ARL., 73, 1998.

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