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MS: Fachverband Massenspektrometrie
MS 8: Multi-Reflection Time-of-Flight Spectrometers
MS 8.4: Vortrag
Donnerstag, 17. März 2022, 11:30–11:45, MS-H9
Study of a laser ablation carbon cluster ion source for MR-TOF MS — •Jiajun Yu1,3 and FRS Ion Catcher Collaboration1,2 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Justus-Liebig-Universität Giessen, Giessen — 3Jinan University, Guangzhou, China
The MR-TOF-MS can be used for mass measurement with a resolving power of up to 1,000,000 (FWHM) and a relative accuracy down to a few 10−8. To achieve high-precision mass measurement with a relative accuracy below 10−8, calibrants over a broad mass range are needed for mass accuracy studies in the 10−9 level with the MR-TOF-MS. Furthermore, calibrants close to the ion of interest for a lowest uncertainty calibration are also needed. We have designed a laser ablation carbon cluster ion source (LACCI) capable of providing references in a mass range of 36 u to 240 u with a repetition rate up to 100 Hz in order to match the needs of the MR-TOF-MS.
Recently, the commission of LACCI has been carried out to study the capability of repetition rates, laser optics (laser spot size, laser energy), and ion optics (ion transfer efficiency). Especially, LACCI has been designed to be operated stably over a long time (several days) with a high frequency (> 10 Hz), then stability for long term operation was also tested. The commissioning results of LACCI coupled with a quadrupole mass filter and the MR-TOF-MS will be reported in this contribution.