Report of ITP program the study on Ruhr-University Bochum. Graduate School of Engineering, Nagoya University D2 Sachiko Iseki
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1 Report of ITP program the study on Ruhr-University Bochum Graduate School of Engineering, Nagoya University D2 Sachiko Iseki
2 Content Schedule January March <In this presentation> 1. Why I want to go Ruhr-University Bochum (Dr. Uwe Czarnetzki Group) 2. Study in Ruhr-University 3. Life in Germany <Target> Making good Communication in English Earning of the plasma physics
3 Why I want to go Ruhr-University Bochum There is Centre for Plasma Science and Technology (CPST) Knowledge of plasma physics Capacitively Coupled Plasma (CCP), inductively coupled plasma (ICP) and micro hollow cathode discharge is analyzed by using the comparison of calculation and optical measurement. Many good techniques Emission spectroscopy, Laser induced florescence method, plasma is measured by many other methods. Atmospheric pressure plasma Low cost, many applications It is important to know the diagnostics of Atmospheric pressure plasma.
4 Study in Ruhr-University Micro hollow cathode discharge of Atmospheric pressure plasma Measurement of breakdown voltage Thomson Scattering V2 Electrodes Power supply (DC pulse) Resist Resist V1 Plasma region Camber filled with Ar gas scattering surface forward scattering θ = 0 o very small region Atmospheric presser small influence to plasma θ Particle Side scattering θ = 90 o Back scattering θ = 180 o Incident light
5 Thomson scattering Thomson scattering of the electron in the plasma Electrons are moving in the plasma The scattering light is red shifted in Doppler effect. If we can find the change of the wavelength, electron temperature can be measured. light Doppler effect Important parameter to find FWHM(Full width at half maximum) Peak position is shifted Temperature is higher, the width is longer. (Center of the peak moves.)
6 Thomson scattering setup Thomson scattering using Nd YAG laser to measure electron density and electron temperature of Micro Hollow cathode Ar plasma. Triple grating spectrometer ICCD Spatial filter (high-resolution image) MH plasma Nd YAG laser
7 Set up of the spatial filter Triple grating spectrometer ICCD Spatial filter (high-resolution image) MH plasma Nd YAG laser (532nm, 20Hz,20mj)
8 Set up of the spatial filter The image becomes clearly. Burn paper Spatial filter (high-resolution image) Nd YAG laser Photo multiplier & beam analyzer Spatial filter (high-resolution image)
9 Beam profile Photo multiplier Spatial filter (high-resolution image) Knife edge Nd YAG laser (532nm, 20Hz,20mj)
10 Set up of the Thomson scattering Triple grating spectrometer ICCD Spatial filter (high-resolution image) Camber filled with Ar gas Nd YAG laser (532nm, 20Hz,20mj)
11 Study Life 9:00-10:00 Arrive at school 11:30-12:30 Lunch & coffee time 18:00-20:00 Go home Good place to study plasma Many professors come and make presentation. Many researchers study there. Meeting: every Tuesday, Lecture time: every Friday, Many Lecture
12 Bochum city Bochum city Succor team VfL Bochum Düsseldorf Köln Frankfurt Land Nordrhein -Westfalen state Easy to get around Ruhr district Düsseldorf:Japan city Köln :Express station of EuroCity Frankfurt: International Airport of Europe lower reach of Rhine river & Ruhr river
13 Ruhr-University Bochum <Good connection> Subway station and bus stop near the university. Calm (good place in another season) Buildings
14 Historical spot of Ruhr district Mine museum (coal) Essen Bochum Coal Mammoth Bone In old days, there are huge coal mine Under the ground. Old picture of Bochum city <History> heavy industrial area Mining: Coal, Ironstone Smelting works of oil, Factory of beer
15 Summary <Target> Making good Communication in English I talked them everyday. (But, I have to study English much more.) Earning knowledge of the plasma physics I have learned many optical technique through the Thomson scattering. They have many good lectures and I can learned more.
16 Thank you for your attention! I really appreciate for Prof. Dr. Czarnetzki and Research Center for Plasma ITP Secretariat staff at Nagoya University.
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