Mark Kushner confirmed his visit to the RUB from the 03.-07.06.2019. A workshop will take place on Monday (03.06.2019) with a talk from Mark as well as from AEPT, EP2, EP5, and TET. For organizing the workshop and the talks, we would ask every institute to present TWO talks on their research. Therefore, please send us a title for your talks until the 29.04.2019.
Vom 06. bis 09. Februar 2017 wird Joost van der Mullen, emeritierter Professor der Technische Universiteit Eindhoven einen Workshop zum Thema "Plasma Characterization and classification using the method of disturbed Bilateral Relations" an der Ruhr-Universität Bochum halten. Prof. van der Mullen ist auch nach seiner Emeritierung weiterhin aktiv in der Forschung tätig und derzeit an der Universiteit Antwerpen an der Fakultät für Chemie beschäftigt. Sein Workshop wird voraussichtlich von 09 bis 17 Uhr in ID 03/653 stattfinden.
Title: Plasma Characterization and classification using the method of disturbed bilateral relations.
Abstract: The aim of this lecture-block is to provide a common basis for engineers, experimentalists, theoreticians and users of plasma sources. This will be done by presenting a plasma classification/characterization tool based on the many aspects of equilibrium departures in plasmas. This leitmotiv is chosen because non-equilibrium is the essential reason behind the success of high-tech plasmas physics. Plasmas can generate large fluxes of photons and radicals but these effluxes will create deviations from the equilibrium.
To find our way in the wilderness of plasma features and sources we will use the method of disturbed Bilateral Relations (dBR), which relates equilibrium disturbing to equilibrium restoring mechanisms. In that way it generates validity-criteria and predicts trends in the deviations from equilibrium. The basic idea of the dBR method is that “equilibrium” has many features, which can be described by specifying the underlying balances of (de)excitation ionization/recombination, absorption/emission etc.. Equilibrium-departure has also many aspects. This can be caused by the efflux of heat, photons and/or (charged) particles.
Several different types of plasmas will be dealt with in various case studies. The tight relation between the (simplified) theory and spectroscopy will be highlighted. Apart from passive spectroscopy (Optical Emission Spectroscopy) we will also give examples of active (laser) spectroscopy like Thomson scattering.
The use of complicated formulas is avoided; the number of equations will be limited.
Frau Dr. Helena Barminova von der National Research Nuclear University MEPhI Moskau hält am 19.05.2015 ab 10:15 Uhr im Gebäude ID einen Vortrag über "Instabilities of a negative ion beam in the initial stage of its formation". Der Raum ist ID 04/401. Interessierte sind herzlich willkommen!
Dr. Enrique Iglesias von der Universidad Simón Bolívar, Caracas, Venezuela ist zzt. Gast am Lehrstuhl AEPT. Er hält an drei Donnerstagen (27.11., 4.12. und 11.12.2014) jeweils von 10:00-12:00 Uhr (ID/04/653) Vorträge.
1) Do, 27.11.2014: Spectroscopy Relevant Topics For In Situ Measurement Of The VUV Radiation Produced In A Microwave Plasma Discharge - We will discuss in detail an experimental procedure, which is based upon recording the fluorescence light emitted by sodium salicylate disks placed at the target position. Basic spectroscopy issues on visible and VUV spectroscopy will be addressed. Preliminary results wil be presented.
2) Do, 4.12.2014: From Photon Density Rate Emitted In The Plasma To Radiant Flux At The Target Surface. A Primer In Radiative Transfer - We will discuss basic concepts of radiative transfer in a plasma, and we will apply them to the interpretation of our VUV measurement. We will also address the basics of absorption spectroscopy using monochromatic beams.
3) Do, 11.12.2014: The Relative And Absolute Calibration Procedure For A VUV And Echelle Spectrometers Using The Techniques That Are Regularly Applied At The AEPT Institute - We will outline the general basic issues of the relative calibration of a modern compact visible spectrometer. We will discuss the relative calibration procedure of a VUV and echelle spectrometers. A basic technique of absolute calibration of an echelle spectrometer will be presented also.
Dr. Renate Förch vom Fraunhofer ICT-IMM / BioNanoInterfaces, M4N aus Mainz hält am Dienstag, den 2. Dezember 2014, 10:00 Uhr in Gebäude ID 04/401 einen Vortrag über "Active materials for wound healing - Ansätze und Erkenntnisse aus den beiden letzten EU Projekten (EU-Project: Bacterio Safe - Active wound dressing based on biological mimicry & EU-Project: EMBEK1 - Development and analysis of polymer based multifunctional bactericidal materials). Interessierte sind herzlich eingeladen!