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Atomphysik-Seminar

• Wednesday, February 08, 2012   11:00 am -- Vorraum Atomphysik, Südbau, II. Stock
  Martin Breitenfeldt, CERN, Genf
  "First high-quality data with 35Ar: The search for scalar weak currents with WITCH"
  

  Low energy precision experiments for the search of exotic components in the weak interaction are complementary to the high energy experiments at the colliders dedicated to discover new particles. In the case of the WITCH experiment the beta neutrino angular correlation coefficient (a) in nuclear beta decay is studied. A deviation from the distribution as predicted by the standard model will reveal the exotic interactions. For the study of the weak interaction WITCH combines a Penning trap arrangement to provide a scattering free source of beta-decaying nuclides with a MAC-E filter setup to analyze the recoil energy distribution. In the online experiments of last year it was finally possible to acquire the first sets of data, meaning recoil spectra of 35Ar ions. The first experiment resulted in a recoil spectrum with about 5000 events recorded. This first spectrum has been analyzed with the help of simulation programs developed in the collaboration and under consideration of the charge state distribution of the daughter nuclei, which has been determined at LPCtrap/GANIL. The result is a value of a = 1.12(33) which is compatible with the literature value for 35Ar. During the second online experiment in 2011 several more recoil spectra each with higher statistics were acquired, which were obtained using various spectrometer voltage sequences. These data are currently under analysis. A first estimation points for a statistical uncertainty on the value of a in the order of 2%. This will allow the investigation of systematic effects in the data as studied before by numerical simulations.
  For further informations please contact h.braeuninggsi.de
  

• Thursday, February 16, 2012   3:00 pm -- Vorraum Atomphysik, Südbau, II. Stock
  Andrey Surzhykov, University of Heidelberg and Atomic Physics Division of GSI
  "Relativistic quantum theory of few–electron systems in strong fields: Atomic physics at high–Z"
  

  Highly-charged ions provide today an ideal ``playground’’ for studying few-electron systems exposed to extremely strong electromagnetic fields produced by heavy nuclei. In such a strong-field regime, the relativistic, many-body and quantum electrodynamics (QED) effects become of paramount importance and may significantly affect not only the shell structure but also the collision dynamics of the few-electron heavy species. In order to probe the properties and behaviour of high-Z ions and, hence, to improve our understanding of atomic physics under such extreme conditions a broad research program is currently being undertaken at GSI and will be further expanded at the future Facility for Antiproton and Ion Research (FAIR). The ultimate success of this program will of course require a deep theoretical understanding of the underlying physics. In this contribution therefore, a review is presented of recent theoretical activities in the field of high-Z atomic physics. Special emphasis will be placed on the studies of fundamental symmetries and interactions in which highly-charged heavy ions can play a decisive role. Moreover, the advances in the non-perturbative analysis of basic atomic processes accompanying ion-ion collisions will be presented. Here we will focus not only on the ultra–relativistic collisions but also especially on the low-energy regime for which the quasi–molecular effects may become of critical importance. Finally, the studies on the linear as well as non-linear photon-matter interactions in the extreme relativistic regime will be briefly discussed.
  For further informations please contact s.luettgesgsi.de
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Berühmte Frauen in Vergangenheit und Gegenwart

K.Schiebelgsi.de

• Tuesday, March 27, 2012   6:00 pm -- GSI-Gästehaus
  Martina Hinkelmann
  "Marion Gräfin Dönhoff"
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EMMI-Seminar

• Friday, March 02, 2012   11:00 am -- KBW 5.029 Seminarraum3
  Thomas Schäfer, North Carolina State University
  "EMMI & ALICE Seminar "Bulk viscosity, particle spectra and flow in heavy ion collisions""
  For further informations please contact s.scheckergsi.de
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GSI Kolloquium

• Tuesday, February 07, 2012   4:15 pm -- Hörsaal
  Marc Weber / Karlsruhe Institute of Technology (KIT)
  "Detectors: state-of-the-art, challenges, trends"
  

  Progress in fundamental and applied science depends crucially on sophisticated detector instrumentation. Unfortunately, the realization of complex detector systems is not always straightforward. In this talk I will present a number of successful detectors in particle physics, astroparticle physics, heavy ion physics and photon science. I will discuss key challenges of future detectors and how these may be met by proper use of modern technologies, novel concepts and adequate system design.

IT/EE-Palaver

• Tuesday, February 28, 2012   10:00 am -- Seminarraum Theorie, Südbau, III. Stock
  Dang Ngo,Fraunhofer Institut Darmstadt
  "IPv6"
  

  Einführung in das neue Adressierungsschema und ein Bericht über den Start von IPv6 am Frauenhofer SIT.
  For further informations please contact K.Schiebelgsi.de
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NuSTAR

• Monday, February 27, 2012   --
  
  "NUSTAR Annual Meeting"
  For further informations please contact j.gerlgsi.de
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• Tuesday, February 28, 2012   --
  
  "NUSTAR Annual Meeting"
  For further informations please contact j.gerlgsi.de
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• Wednesday, February 29, 2012   --
  
  "NUSTAR Annual Meeting"
  For further informations please contact j.gerlgsi.de
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• Thursday, March 01, 2012   --
  
  "NUSTAR Annual Meeting"
  For further informations please contact j.gerlgsi.de
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• Friday, March 02, 2012   --
  
  "NUSTAR Annual Meeting"
  For further informations please contact j.gerlgsi.de
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• Monday, May 07, 2012   --
  
  "R3B Collaboration Metting"
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• Tuesday, May 08, 2012   --
  
  "R3B Collaboration Metting"
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• Wednesday, May 09, 2012   --
  
  "R3B Collaboration Metting"
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• Thursday, May 10, 2012   --
  
  "R3B Collaboration Metting"
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• Friday, May 11, 2012   --
  
  "R3B Collaboration Metting"
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NuSTAR Seminar

• Wednesday, February 08, 2012   11:00 am -- Seminarraum Theorie, Südbau, III. Stock
  Peter von Neumann-Cosel, TU Darmstadt
  "Complete Electric Dipole Strength from Relativistic Proton Scattering and the Neutron Skin in 208Pb"
  

  Scattering of polarized protons with energies of a few 100 MeV at angles close to and including 0° is presented as a new spectroscopic tool for the study of the electric dipole response in nuclei. Complete electric dipole strenth distributions can be extracted between about 5 and 20 MeV with two independent methods based on a multipole decomposition analysis of the cross sections and the combined information from spin transfer observables. A case study of 208Pb demonstrates excellent agreement with other probes but reveals the presence of previously unknown E1 strength just above the neutron threshold. Furthermore, the Coulomb-nuclear interference term in the cross sections shows sensitivity to the underlying structure of E1 transitions, allowing for the first time an experimental extraction of the pygmy dipole resonance (PDR). Possible information on the neutron skin in 208Pb and the symmetry energy in neutron matter from the measured dipole polarizability and PDR properties is discussed.
  For further informations please contact S.Heinzgsi.de
  

Wissenschaft für Alle

C.Pomplungsi.de

• Wednesday, February 15, 2012   2:00 pm to 3:00 pm -- Hörsaal
  Günther Rosner, FAIR
  "Reise ins Innerste der Materie – Forschung an der neuen Teilchenbeschleunigeranlage FAIR"
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• Wednesday, March 14, 2012   2:00 pm to 3:00 pm -- Hörsaal
  Karlheinz Langanke, GSI
  "Supernovae – Wir sind alle Sternenstaub"
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• Wednesday, April 18, 2012   2:00 pm to 3:00 pm -- Hörsaal
  Kai Otto, ion42
  "FAIR – Architektur eines Großbeschleunigers"
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• Wednesday, May 16, 2012   2:00 pm to 3:00 pm -- Hörsaal
  Oskar von Stryk, Technische Universität Darmstadt
  "Intelligente Roboter durch Fußball"
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• Wednesday, June 20, 2012   2:00 pm to 3:00 pm -- Hörsaal
  Robert Kaderka, GSI
  "Ein Phantom auf Reisen – Untersuchung der Strahlung im Weltraum und in der Tumortherapie mit MATROSHKA"
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HIC for FAIR
Physik und Technik von Beschleunigern (DA)

H.Klingbeilgsi.de

• Monday, February 06, 2012   4:00 pm -- Hörsaal S2/17, Raum 103, Schlossgartenstr. 8
  Dr. Ulrich Laier, GSI
  "The Collector Ring Debuncher"
  For further informations please contact H.Klingbeilgsi.de
  

Physikalisches Kolloquium (F)

• Wednesday, February 08, 2012   5:00 pm -- Großer Hörsaal, Raum 0.111, Max-von-Laue-Str. 1
  Prof. Dr. Matthias Kling, MPI für Quantenoptik, Garching
  "Attosecond electron dynamicsin nanoparticles in strong laser fields"
  

Physikalisches Kolloquium (GI)

• Monday, February 06, 2012   5:00 pm -- Hörsaal III, Physik. Inst., Heinrich-Buff-Ring 14
  Dr. Thorsten Wagner, Universität Paderborn
  "Mesoporöse Materialien in der Gassensorik"
  

Physikalisches Kolloquium (KS)

• Thursday, February 09, 2012   5:15 pm -- Hörsaal 100, Heinrich-Plett-Straße 40
  Prof. Dr. Steffen Glaser, TU München
  "Optimal Control of Spins"
  

Physikalisches Kolloquium (MZ)

• Tuesday, February 07, 2012   5:00 pm -- Hörsaal des Instituts für Kernphysik, Becherweg 45
  Prof. Stefan Brönnimann, University Bern
  "Neue Ansätze der historischen Klimatologie und Anwendung für die Analyse von Stürmen und Starkniederschlägen in Mitteleuropa seit 1871"