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MS: Fachverband Massenspektrometrie

MS 2: Präzisionsmassenspektrometrie, Ionenfallen, FT-IZR-MS, Moleküle, Cluster II

MS 2.4: Vortrag

Montag, 2. März 2009, 15:00–15:15, VMP 8 R05

Broad-band FT-ICR detection at the Penning trap mass spectrometer TRIGA-TRAP — •Konstantin Knuth¹, Klaus Blaum^2,3, Michael Block⁴, Klaus Eberhardt⁵, Martin Eibach¹, Frank Herfurth⁴, Jens Ketelaer¹, Jochen Ketter¹, Szilard Nagy², Julia Repp^1,2, Christian Smorra^3,5, Sven Sturm¹, and Stefan Ulmer^1,3 — ¹Institut für Physik, Universität Mainz, D-55128 Mainz — ²Max-Planck-Institut für Kernphysik, D-69117 Heidelberg — ³Physikalisches Institut, Universität Heidelberg, D-69120 Heidelberg — ⁴GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt — ⁵Institut für Kernchemie, Universität Mainz, D-55128 Mainz

The double Penning trap mass spectrometer TRIGA-TRAP will perform high-precision mass measurements on exotic neutron-rich nuclides, which are produced via neutron-induced fission of actinide targets at the research reactor TRIGA Mainz. In order to determine which ion species are present in the ion bunch delivered to the Penning trap system, a non-destructive ion detection technique will be implemented in the cylindrical purification trap. This so called broad-band Fourier transform ion cyclotron resonance (FT-ICR) detection technique is based on the detection of image currents, induced by the ions in the trap electrodes. To this end, a new cryogenic low-noise broad-band amplifier is being designed and tested. With this system the identification of contaminations will be possible without the need to eject ions from the trap as usually done at other facilities. The setup as well as its present status will be presented.