Hannover 2010 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 8: Poster

MS 8.2: Poster

Donnerstag, 11. März 2010, 16:00–18:00, Lichthof

TRIGA-TRAP: High-precision mass measurements on neutron-rich fission products and actinoids — •J. Ketelaer1, T. Beyer2,3, M. Block4, K. Eberhardt1, M. Eibach1,3, F. Herfurth4, Sz. Nagy2,4, C. Smorra1,3, W. Nörtershäuser1,4, and K. Blaum2,31Johannes Gutenberg-Universität, 55128 Mainz — 2Max-Planck-Institut für Kernphysik, 69117 Heidelberg — 3Ruprecht-Karls-Universität, 69117 Heidelberg — 4GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt

Triga-Trap is currently the only Penning trap mass spectrometer installed at a nuclear reactor. High-precision mass measurements on neutron-rich fission products and actinoids will be performed here to provide valuable input data for tests of nuclear structure models as well as for astrophysical calculations of the r-process. The setup also serves as a test bench for the development of new detection techniques which will be implemented at other experiments at the future GSI facility FAIR. As an example, a non-destructive image current detection system will allow mass measurements on single stored singly-charged ions whereas a few hundred to thousands are typically needed with the traditionally used time-of-flight resonance method. Triga-Trap is presently the only on-line Penning trap mass spectrometer where simultaneously the destructive and non-destructive detection techniques are implemented. The poster will show the technical developments and give an overview on first time-of-flight mass measurements already performed on rare earth elements and actinoids.

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