Particle manipulation in plasma device & Dynamics of binary complex plasma [Elektronische Ressource] / Ke Jiang. Betreuer: Gregor Eugen Morfill

Jiang Rong, Kek

Sujets

• Physik

Informations

• Publié par: ludwig-maximilians-universitat_munchen
• Publié le: 01 janvier 2011
• Nombre de lectures: 6
• Langue: English
• Poids de l'ouvrage: 14 Mo

Extrait

Particle manipulation in plasma device
& Dynamics of binary complex plasma
Ke Jiang
Munchen 2011Particle manipulation in plasma device
& Dynamics of binary complex plasma
Ke Jiang
Dissertation
an der Fakult at fur Physik
der Ludwig{Maximilians{Universit at
Munc hen
vorgelegt von
Ke Jiang
aus Dalian, P.R.China
Munc hen, den 31.05.2011Erstgutachter: Prof. Gregor Mor ll
Zweitgutachter: Prof. Hartmut Zohm
Tag der mundlic hen Prufung: 01.08.2011I think physicists are the Peter Pans of the human race. They never grow up and they
keep their curiosity.
Isidor Isaac Rabi
It is not the possession of truth, but the success which attends the seeking after it, that
enriches the seeker and brings happiness to him.
Max Planck
Stands at the sea... wonders at wondering... I... a universe of atoms... an atom in the
universe.
Richard FeynmanviContents
Acknowledgements ix
Zusammenfassung xi
Abstract xiii
1 Introduction 1
1.1 Complex plasma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Examples of complex plasmas . . . . . . . . . . . . . . . . . . . . . 2
1.1.2 Basic properties of complex plasmas . . . . . . . . . . . . . . . . . 8
1.2 Dust particle manipulation and removal in plasma device . . . . . . . . . . 10
1.2.1 Current particle manipulation methods . . . . . . . . . . . . . . . . 11
1.2.2 Forces used for dust particle manipulation . . . . . . . . . . . . . . 11
1.3 Binary complex plasmas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.3.1 Phase separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.3.2 Lane formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.4 Simulating the complex plasma . . . . . . . . . . . . . . . . . . . . . . . . 18
1.4.1 Equations of motion for dust particles . . . . . . . . . . . . . . . . 19
1.4.2 Langevin dynamics simulations . . . . . . . . . . . . . . . . . . . . 20
2 Dust removal by striped electrode 23
2.1 Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.2 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.3 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3 Dynamics of binary complex plasmas 29
3.1 Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.1 Results of phase separation simulation . . . . . . . . . . . . . . . . 30
3.3.2 of lane formation simulation . . . . . . . . . . . . . . . . . 32viii CONTENTS
4 Mach cones in a three-dimensional complex plasma 35
4.1 Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.3 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5 Summary 39
A Charging mechanisms and charge uctuation 41
Publication list 63
Curriculum Vitae 65
Enclosed papers 67Acknowledgements
Firstly I would like to thank my supervisor, Prof. Gregor Mor ll, for his supervision and
encouragement and for o ering me the opportunity to perform research and giving me
the freedom to choose topics at the Max-Planck-Institute for Extraterrestrial Physics. His
deep thinking and humor have shown me that research can be so entertaining. Besides,
his comments and suggestions are part of what constructed the nal form of this thesis.
Secondly, I would like to thank Dr. Yangfang Li, for his everyday company and friend-
ship, as well as the vast amount of knowledge he passed onto me in experimental physics.
His unconditional contribution is a key element in the success of building the striped elec-
trode chamber. His suggestions lead this thesis toward the current shape.
I am also deeply grateful to the following colleagues without whom the completion of
this thesis would not be possible: I thank Dr. Hubertus Thomas for reading the thesis
and providing very useful suggestions; Dr. Alexei Ivlev for many helpful discussions on
lane formation and phase separation, and for sharing his profound knowledge on physics;
Dr. Lujing Hou for his constant encouragement and fruitful discussions about numerical
simulations ever since my undergraduate study; Dr. Tetsuji Shimizu and Dr. Uwe Konopka
for their help in building the experimental apparatus, for passing their mechanical skills
onto me and for being humorous though in di erent ways; Dr. Vladimir Nosenko for being
gentle and encouraging all the time and for many intensive discussions about Mach cones;
Dr. Robert Sutterlin for fruitful discussions about binary complex plasmas and for his
great support for computers; Dr. Philip Brandt for helping me polish the German abstract;
Chengran Du for his e orts on analyzing my simulation results for the lane formation topic
in chapter 3.
I would also like to thank my current and former colleagues in complex plasma group
in MPE for helpful discussions, parties, table tennis, etc: Alexander, Boris, Christina,
Christoph, Dong, Guido, Herwig, Julia, Jin, Katinka, Lisa, Lena c, Michael, Martin,
Mikhail, Mierk, Markus, Milenko, Manis, Peter, Pintu, Roman, Ralf, Slobodan, Sergey
(both young and old), Satoshi, Tobias, Thomas, Tetyana, and Victoria.
Thanks goto Angelika and Elsbeth for their support to address administrative issues.
Thanks must also goto engineers in our group, Bernd Ste es, Florian Huber and Gun ter
Stadler for their technical support in the laboratories.
I am grateful to Dr. Felix Cheung for his help in improving my academic writing since
my graduate study and providing valuable suggestions for this thesis.
I would also like to take this opportunity to thank Prof. Younian Wang for giving mex 0. Acknowledgements
the rst lesson on plasma physics at Dalian University of Technology.
Lastly, I am in great debts to my beloved grandparents who raised me up and supported
my study unconditionally. I would also like to thank my wife Ning for her love, patience,
and for understanding me spending most of the time on physics. I thank my daughter
Luna for dispersing my life into di erent colors starting with lots of \PHDs" (Pretty Heavy
Diapers).