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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.47: Poster

Thursday, March 19, 2009, 14:00–16:00, Audi-Max

TRIGA-Laser: Collinear laser spectroscopy on short-lived fission products and heavy elements at the research reactor TRIGA Mainz — •Jörg Krämer¹, Klaus Blaum², Klaus Eberhardt¹, Christopher Geppert³, Andreas Krieger¹, and Wilfried Nörtershäuser^1,3 — ¹Mainz, Institut für Kernchemie, Mainz, Germany — ²Max-Planck-Institut für Kernphysik, Heidelberg, Germany — ³Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

At the TRIGA research reactor at the University of Mainz a collinear laser spectroscopy experiment is currently being installed, which serves as a prototype for the LaSpec collaboration within FAIR at GSI Darmstadt. This setup at the TRIGA reactor allows to study short-lived fission products created near the reactor core by neutron induced fission. A variety of fissionable actinide isotopes are available as target materials up to ²⁴⁹Cf which give access to different regions of the nuclear chart. A special gas-jet transport system will be used to guide the nuclei towards an ion source, where ion beams of a large variety of elements up to refractory elements will be produced and after mass separation be guided either to the collinear beamline of TRIGALASER for laser spectroscopic studies or to TRIGATRAP for high-accuracy mass measurements. In the first phase of the experiment a purely optical detection system with photomultipliers is planned. We will present the technical outline of the experiment, the results of ion optics performance tests making use of a surface ion source and give a status report of laser spectroscopy test measurements with Rb atoms.