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Abteilung für gespeicherte und gekühlte Ionen
 
Max-Planck-GesellschaftMax-Planck-Institut für KernphysikUniversität Heidelberg Abteilung für gespeicherte und gekühlte Ionen
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Tel.: +49 6221 516-851
Fax: +49 6221 516-852
Postadresse
Max-Planck-Institut für Kernphysik
Postfach 10 39 80
69029 Heidelberg
Besucheradresse
Max-Planck-Institut für Kernphysik
Saupfercheckweg 1
Gebäude: Gentnerlabor, Raum 134
69117 Heidelberg

 

Oberseminar, WS15/16

Physik mit gespeicherten und gekühlten Ionen

Seminarraum Blaum
14tägig, mittwochs 15:00


Seminarprogramm


Der Vortrag musste abgesagt werden !
Datum: 21 Okt 2015
Redner: Dr. Annette Svendsen, Aarhus University
Titel: Analysis of ionic photofragments stored in the SAPHIRA storage ring

 

Datum: 4 Nov 2015
Redner: Dr. Boris Zelener, FAIR-Russia Research Center, ITEP and Kurchatov Institute
Titel: Simulations of trapping anti-hydrogen atoms. Theory and experiment

Abstract

A study of anti-hydrogen atoms is very important for fundamental physics. In the experiments in CERN [1] anti-hydrogen atoms are created by mixing of cold antiprotons and positrons in magnetic trap. We have made theoretical studies of the relaxation processes in the presence of strong magnetic field (1-3 Tesla) using molecular dynamics technique [2]. The calculated de-acceleration rates are different for particles with velocities which parallel and perpendicular to the applied magnetic field. The creation of anti-hydrogen atoms can occur under condition when parallel velocities of the particles are still high. It may limit the production of trapped anti-hydrogen atoms in the existing experimental arrangements. In order to increase the number of trapped anti-hydrogen atoms the optical cooling methods can be used. We suggest perform experimental simulations of anti-hydrogen trapping with MOT for lithium atoms. As the first step we have studied of highly-excited states of ultracold lithium-7 atoms by using tunable UV-laser. The diagnostic of Rydberg transitions of lithium atoms in MOT is developed [3]. In our work the results for different Rydberg states nS, nP, nD, nF with quantum number n from 38 to 161 will be presented. In future a modified trap for anti-hydrogen atoms will be assembled at facilities of An International Facility for Antiproton and Ion Research (FAIR). The work was supported by Research Center FAIR (FAIR, Russia).

References
[1] G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, et al. Nature 468, 673 (2010).
[2] A. A. Bobrov, S. Ya. Bronin, B . B. Zelener, et al. JETP 14, 185 (2013).
[3] B . B. Zelener, S.A. Saakyan, V.A. Sautenkov, et al. JETP, 148, 5 (2015).

 

Bitte Zeitänderung beachten !
Datum: 18 Nov 2015, 16:00
Redner: Prof. Ed Myers, Florida State University
Titel: Atomic Mass Measurements of Tritium and Helium-3

 

Datum: 2 Dez 2015
Redner: Johannes Simonis, Uni Darmstadt
Titel: Three-nucleon forces: From oxygen to calcium

 

Der Vortrag musste abgesagt werden !
Datum: 13 Jan 2016
Redner: Dr. Nathan Leefer, Uni Mainz
Titel: Searching for new physics with atomic systems

 

Datum: 27 Jan 2016
Redner: Dr. Szilard Nagy, MPIK
Titel: Towards ground-state properties of thermal-neutron-induced fission products with TRIGA-SPEC