SAMOP 2023 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 2: Multi-Reflection Time-of-Flight Spectrometers
MS 2.4: Vortrag
Mittwoch, 8. März 2023, 11:45–12:00, F128
A laser ablation carbon cluster ion source for the MR-TOF-MS of the FRS Ion Catcher — •Jiajun Yu1,3, Christine Hornung1,2, Timo Dickel1,2, Zhuang Ge1, Hans Geissel1,2, Gabriella Kripko-Koncz2, Meetika Narang2, Wolfgang Plaß1,2, Christoph Scheidenberger1,2, and FRS Ion Catcher Collaboration1,2,3 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Justus-Liebig-Universität Gießen, Gießen — 3Jinan University, Guangzhou, China
A laser ablation carbon cluster ion source (LACCI) has been built and commissioned. It is capable of providing closely-spaced calibrant ions in the mass range up to ∼300 u for highly accurate mass measurements of exotic nuclei (δm/m ∼10−8) and systematic studies of the mass uncertainties with the MR-TOF-MS of the FRS Ion Catcher at GSI Darmstadt, Germany. The LACCI contains newly developed advanced techniques, including a special ion optics design and a 2D movable target table to ensure stable long-term (weeks) operation, a laser-spot/target monitoring system, and a dedicated re-capture unit, which will be reported. A study of the laser energy, repetition rates and long-term measurements, has been carried out with carbon targets (Sigradur, Fullerene) and metallic targets (Ag, W, Au, Cu, Pt). The commissioning results of LACCI coupled via a radio frequency switchyard to merge ions from different sides and transport them through a quadrupole mass filter into an MR-TOF-MS will be reported in this contribution.