Dresden 2011 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: New Mass Spectrometric Methods and Technical Developments
MS 8.4: Vortrag
Donnerstag, 17. März 2011, 11:30–11:45, GÖR 229
Status Report for the FRS Ion Catcher — •Timo Dickel1,2, Peter Dendooven4, Jens Ebert1, Hans Geissel1,2, Christian Jesch1, Wadim Kinsel1, Wolfgang R. Plaß1,2, Sivaji Purushothaman2, Manisha Ranjan4, Moritz Pascal Reiter1, Christoph Scheidenberger1,2, and Mikhail I. Yavor3 — 1Justus-Liebig-Universität Gießen — 2GSI, Darmstadt — 3Inst. for Analytical Instrum., Russian Academy of Sci., St. Petersburg — 4KVI, University of Groningen, Netherlands
At the Fragment Separator (FRS) at GSI very exotic nuclei can be produced and separated. To facilitate experiments with the highest possible precision, the exotic nuclei have to be slowed down from relativistic energies to a few eV and thermalized. At the FRS Ion Catcher experiment, this is realized with a cryogenic gas-filled stopping cell. After the ions have been stopped and extracted from the cryogenic gas-filled stopping cell, they are guided through gas filled RFQ to a multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS). The MR-TOF-MS will be used for highly accurate mass measurements (δ m/ m ≈ 10−7) and to remove isobaric contaminants from the ions of interest to facilitate other experiments. The first online test of the FRS Ion Catcher is scheduled for 2011. Besides the online commissioning of the gas cell and the MR-TOF-MS, which will also be part of the future LEB of the Super-FRS at FAIR, the masses of very neutron-rich r-process nuclei shall be measured with the FRS Ion Catcher.