EP2
PROF. DR. IGOR DENYSENKO
Professor Igor Denysenko of the School of Physics and Technology, V. N. Karazin Kharkiv National University, Ukraine, is a guest of Experimental Physik II from 2nd March to 15th April 2013. We continue our collaboration with Prof. Denysenko in the research field of dusty plasmas. Prof. Denysenko has developed a space-averaged global model to characterize the afterglow of pulsed argon plasmas which contain the large density of hydro-carbonaceous dust particles [1]. This global model is further developed in order to study the time evolution of the dust charge and the rate coefficient for electron collection by dust particles. During Prof. Denysenko’s stay in Bochum, we have prepared an article on this study. Furthermore, an article on a new non-invasive method for measurements of ion fluxes and ion densities in pulsed capacitively-coupled RF plasmas has been submitted. We kindly acknowledge the financial support of the Humbolt Foundation.
[1] I. Denysenko, I. Stefanovic, B. Sikimic, J. Winter, N.A. Azarenkov, and N. Sadeghi, J. Phys. D: Appl. Phys. 44 (2011) 205204
Chemistry
PROF. DR. OLA NILSEN
In the context of the "Inorganic Chemistry Colloquium" Prof. Dr. Ola Nilsen from the Dept. of Chemistry of the University of Oslo Norway will talk about "Constructing complex oxides by ALD" on May 8, 2013 starting at 9:00 am (Core Lecture Hall NC 3/99).
Abstrac: The atomic layer deposition (ALD) technique can be used to construct thin films of numerous different types of binary oxides with surprisingly good quality. These oxides grow through self-limiting chemical reactions between the vapour phase and the available surfaces. When such binary processes are combined, several new effects may occur which may enhance or retard the processes since the surface chemistry is altered. The current talk will elaborate on experiences in deposition of multicomponent materials and show that what one first may believe is an obstacle, might be to your advantage.
EP2
PROF. DR. LAWRENCE J. OVERZET
Prof. Dr. Lawrence J. Overzet from UT Dallas will be a guest of Dr. Volker Schulz-von der Gathen and Judith Golda from May 13-16, 2013 as part of the research group FOR1123 "Physics of Microplasmas".
TP4
GUESTS FROM ANKARA
From May 17-21, 2013, Seydi Yavas, Burak Eldeniz and Sinem Yilmaz (pictured from left to right) from the Ultrafast Optics & Lasers Laboratory (UFOLAB) at Bilkent University in Ankara, Turkey, visited the Institute of Experimental Physics II to work on the laser with PhD student Stefan Spiekermeier. They installed the temperature-stabilized oscillator for the femtosecond laser.
TP1
PROF. RICHARD SYDORA
Prof. Dr. Richard Sydora from the University of Alberta, Edmonton is again a guest in Bochum from 3 to 14.6.2013. Within the framework of the Research Group 1048 and the Research Department "Plasmas with Complex Interactions" he is modeling together with the Bochum plasma physicists the dynamics of the magnetic structures produced in the FlareLab experiment and the particle acceleration occurring in the process. Both aspects are crucial for the occurrence and the effects of solar mass ejections and are modeled in Bochum in laboratory experiments and by means of large-scale computer simulations.
Prof. Sydora will give a talk on 6/13 at 16:00 in NB 7/173 with the topic "Modeling Ion-Acoustic Turbulence and Particle Acceleration in the FlareLab Experiment." Interested parties are welcome to attend!