Hannover 2010 – wissenschaftliches Programm
MS 7.6: Vortrag
Donnerstag, 11. März 2010, 12:00–12:15, F 428
MR-TOF-MS: A Time-of-Flight-Based System with sub-ppm Mass Measurement Accuracy and Large Isobar Separation Ion Capacity (>106 ions/s) — •Timo Dickel1, Wolfgang R. Plaß1,2, Arno Becker1, Ulrich Czok1, Hans Geissel1,2, Emma Haettner1,2, Christian Jesch1, Wadim Kinsel1,2, Martin Petrick1, Christoph Scheidenberger1,2, and Mikhail I. Yavor3 — 1Justus-Liebig-Universität Gießen — 2GSI, Darmstadt — 3Inst. for Analytical Instrum., Russian Academy of Sci., St. Petersburg, Russia
At low-energy radioactive ion beam facilities, mass measurements and spectroscopy for a broad range of nuclei can be performed. For these experiments, the nuclei have to be stopped, cooled, separated and measured as fast and efficiently as possible. A multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) has been developed that will be essential for these experiments. It is a multi-purpose, non-scanning mass spectrometer with single-ion sensitivity. The MR-TOF-MS has been tested at the tandem accelerator of the Maier-Leibnitz-Laboratory Garching (Germany). Systematic studies on the mass resolving power (>300.000), transmission efficiency (∼70%), separation power and dynamic range of the MR-TOF-MS will be presented. Mass measurements of an isobaric triplet indicate that the systematic errors of the device are as low as 10−7.