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21 - 2012 21. Mai - 27. Mai 2012 |
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Wissenschaftliche Sitzungen/Seminare bei GSI
Vorträge an Hochschulen der näheren Umgebung
SPD-Fraktion besichtigt GSI und FAIR-Baustelle
Foto: G. Otto
Die Mitglieder der SPD-Stadtverordnetenfraktion Darmstadt waren am 14. Mai 2012 zu Gast bei GSI und FAIR. Bei einer Führung wurden sie über aktuelle Projekte informiert, anschließend fand im Seminarraum Theorie die Fraktionssitzung statt. „Die Arbeit der GSI ist beeindruckend, vor allem die Möglichkeiten, die damit verbunden sind“, so der SPD-Stadtverordnete Moritz Röder aus Wixhausen. „Besonders interessant war für mich die Entwicklungen der GSI im Bereich der Krebsforschung, die ganz neue, gezielte Tumorbehandlungen möglich gemacht haben.“
Die SPD-Stadtverordneten konnten sich außerdem ein Bild vom Stand des FAIR-Projektes machen und sich den Fortschritt der Bauarbeiten auf dem Gelände ansehen.
Presse- und Öffentlichkeitsarbeit
Physik-Preis 2012 für Beatrice Schuster
Dr. Beatrice Schuster erhielt am 27. April von der Vereinigung von Freunden der Technischen Universität zu Darmstadt e.V. einen Preis für hervorragende wissenschaftliche Leistungen im Rahmen ihrer Dissertation. Zentrales Thema der Promotionsarbeit war das Phasenverhalten von Oxidkeramiken unter extremen Druck- und Bestrahlungsbedingungen. In Bestrahlungsexperimenten am SIS kombiniert mit Hochdrucktechniken zeigte Frau Schuster faszinierende Effekte, die neue Erkenntnisse über Materialverhalten, z. B. im Inneren der Erde, oder für die Neuentwicklung besonders harter Werkzeuge versprechen. Die Promotionsarbeit wurde in der GSI-Abteilung Materialforschung durchgeführt, in enger Zusammenarbeit mit Prof. Franz Fujara (Fachbereich Physik der TU Darmstadt).
Foto: Reinhard Neumann
Preisträgerin Beatrice Schuster (2. von rechts) zusammen mit Albert Filbert (Vorsitzender der Vereinigung von Freunden der TU Darmstadt, links), ihrem Doktorvater Franz Fujara (2. von links) und Christina Trautmann (rechts, Materialforschung GSI)
Christina Trautmann
Wissenschaftliche Sitzungen/Seminare bei GSI
| Di 22.05. 10.00 Uhr | IT/EE-Palaver |
Herr Kayser, Herr Klaproth, Fa. SmartOptics: "WDM Grundlagen"
| Di 22.05. 14.30 Uhr | Physik dichter Plasmen mit Schwerionen- und Laserstrahlen |
Mathias Winkel, Jülich Supercomputer Centre, Institute for Advanced Simulation, Forschungszentrum Jülich: "Electronic Correlations in Nanoclusters: Tree Code Simulations"
Recent developments in short pulse laser technology combined with advances in the preparation of metallic nanoclusters have led to new possibilities in the exploration of the electronic properties of nano-scale materials. Since the quasi free electrons inside the cluster are confined to a very small volume, their collective properties significantly change in comparison to bulk matter. Extending earlier simulations of Raitza et al., we examine optical properties of laser-excited nano¬clusters. In particular, we study electronic correlations in a sodium-like material. To cover a broad range from nano- to microscale, the momentum autocorrelation function is evaluated in classical molecular dynamics simulations for systems with several hundred up to few million electrons. Computations at this scale are made possible through the use of the highly scalable parallel Barnes-Hut tree code PEPC developed at JSC. It was recently extended to exploit hybrid supercomputer architectures such as the BlueGene/Q. First results for electronic resonances in metallic nanoclusters are shown and compared to the respective bulk properties.
| Di 22.05. 16.15 Uhr (Tee ab 15.45 Uhr) | GSI-Festkolloquium aus Anlass des 85. Geburtstags von Prof. Rudolf Bock |
Reinhard Stock, University of Frankfurt: "50 Years in Life and Science with Rudolf Bock"
In honor of Rudolf Bock, at the occasion of his 85th birthday, I will recall some outstanding stations of his life in science. This ranges from the foundation of GSI and, at about the same time, the first crucial steps in extending heavy ion physics to relativistic energy, in the early 70ties. He founded the GSI-LBL Collaboration at the Berkeley Bevalac, which shaped all subsequent research in strongly interacting matter at high energy density until today due to the construction of large acceptance "4Pi" detector systems: an approach governing the future key experiments, from the CERN SPS NA49 and WA89 experiments via STAR at RHIC, to ALICE at the LHC. From initial insight concerning the hadronic matter equation of state at the Bevalac and at the SIS synchrotron of GSI, Rudolf Bock has moved onward with the field developing into the analysis of the "Quark Matter"-state of QCD, notably by securing a crucial role of GSI in constructing the CERN-SPS-program with ultrarelativistic Lead(Pb208) beams. This work has found a continuation to the present ALICE experiment at the CERN LHC, with GSI again contributing the heart of this detector. From the early Bevalac times, a second, completely novel research theme arose with the idea to induce thermonuclear pellet fusion by inertial confinement under bombardment with heavy relativistic nuclear beams of unprecedented luminosity. Rudolf Bock has rooted this research at GSI, and he still serves this program as a "spiritus mentor", until today! Congratulations, Rudolf!
| Mi 23.05. 11.00 Uhr | Atomphysik-Seminar |
Thomas Pfeifer, MPI-K, Heidelberg: "Shifting paradigms in ultrafast atomic and molecular physics: Precision spectroscopy of 2-electron dynamics with attosecond pulses and noise-enhanced temporal resolution at FELs"
Two parallel revolutions in laser science have recently led to the generation of attosecond pulsed light on one hand and intense x-ray light on the other hand. Despite this progress on the table-top optical and free-electron laser (FEL) light-source side, respectively, direct experimental access to time and space-resolved quantum motion, in particular to the full wave function of two or multiple electrons remained a formidable challenge. One major focus of my research and topic of this talk is the development of a universal ultrafast spectroscopy and imaging toolkit, designed for these novel light sources, to gain access to intra-atomic and -molecular motion. Combination of attosecond technology with high-resolution spectroscopy recently allowed us to measure near-valence wave-packet motion of two excited electrons in helium oscillating with a period of 1.2 fs. We thereby discovered a general control mechanism acting on the phase of two-electron wave functions, an essential ingredient in the laser synthesis of chemical bonds, typically featuring two electrons per binding orbital. We also recently developed the conceptual framework of enhancing temporal resolution in pump–probe experiments by using correlated noise existing e.g. in FEL pulses. The time-dependent molecular wave function in D2 molecules can thus be probed with few-femtosecond temporal and sub-Angstrom spatial resolution, even though the duration of the laser pulses (~30 fs) and their wavelength (33 nm) are order(s) of magnitude larger. Using coincidence detection methods (Reaction microscopes aka COLTRIMS) in tandem with the novel laser sources, the multiple-ionization dynamics of I2 was measured, also resolving its dissociation. This allows us to smoothly observe the transition from a molecule to an atom interacting with strong high-frequency FEL pulses, of interest for future applications of x-ray FELs towards the imaging of structure and dynamics in larger molecules of biological interest.
| Mi 23.05. 11.00 Uhr | NuSTAR Seminar |
Haik Simon, GSI: "Stepping stones across the dripline"
In my presentation I'd like to focus on the very exotic 13Li nucleus, its subsystems, and the associated stepping stone 14Be being studied by particular breakup reactions. I'd like to present selected examples to illustrate the validity and range of the used methods and will put a focus on the reaction mechanism, allowing to tailor the properties of the populated unbound extremely neutron rich systems. Ambiguities in the interpretation of different data sets will be presented and discussed. I'd like to show future prospects for reaction studies in the R3B setup at FAIR and show examples of prototype developments and its applications in the current R3B/Cave-C e.g. for neutron-rich oxygen isotopes.
Vorträge an Hochschulen der näheren Umgebung
Die hier aufgenommenen Daten sind auswärtigen Ankündigungen entnommen und können von der Redaktion nicht auf ihre Richtigkeit überprüft werden
Darmstadt
| Fr 25.05. 17.15 Uhr | Physikalisches Kolloquium |
Prof. Dr. Michael Kobel, Institut f. Kern- und Teilchenphysik, TU Dresden: "The importance of particle masses and the search for their origin at CERN's Large Hadron Collider"
Heidelberg
| Fr 25.05. 17.00 Uhr c.t. | Physikalisches Kolloquium |
Prof. Chris Greene, Department of Physics and JILA, University of Colorado, Boulder: "Universal Few-Body Physics: from Nuclear Physics to the Ultracold"
Kassel
| Do 24.05. 17.00 Uhr c.t. | Physikalisches Kolloquium |
Prof. Dr. Christiane Koch, Fachbereich Mathematik und Naturwissenschaften: "Antrittsvorlesung: Toward the coherent control of light-induced binary reactions"
Mainz
| Di 22.05. 17.00 Uhr c.t. | Physikalisches Kolloquium |
Prof. Dr. Makoto C. Fujiwara, Triumf, Canada: "Casting Light on Antimatter: Fundamental Physics with Trapped Antihydrogen Atoms"
| Mi 23.05. 17.00 Uhr c.t. | Seminar für Kern- und Kosmochemie |
Philippe Claeys, Vrije Universiteit Brussels: "Impacts throughout geological history: The good, the bad and the maybes"