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HK: Fachverband Physik der Hadronen und Kerne

HK 72: Poster

HK 72.61: Poster

Donnerstag, 14. März 2024, 17:15–18:45, HBR 14: Foyer

Systematic studies with a laser ablation carbon cluster ion source at the FRS Ion Catcher — •Leonard Welde¹, Jiajun Yu², and Christine Hornung^1,2 for the FRS Ion Catcher collaboration — ¹Justus-Liebig-Universität Gießen, Gießen — ²GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

A laser ablation carbon cluster ion source (LACCI) was commissioned at the FRS Ion Catcher at GSI Darmstadt, Germany. The LACCI will be used in future experiments with exotic nuclei to provide calibrant ions from different carbon and metal targets in the mass range of interest up to about 300 u. ¹³C-enriched Fullerene targets allow calibrant ions with nearly every mass number in the medium mass range. These ions can be mixed with the ions of interest using a radio frequency quadrupole (RFQ) switchyard. Afterwards, the ions are sent to a RFQ mass filter and further to a multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS).
First measurements targeting rate stability and long term stability were taken with a variety of different targets, such as carbon targets (Sigradur^®, Fullerene) and different metal targets. Influence of the energy and repetition rate of the laser on the mass range of the produced carbon cluster ions was investigated. In addition, first results merging ions from LACCI and ions from a thermal ¹³³Cs ion source inside the FRS Ion Catcher were achieved. The results of this first measurements and studies will be reported in this contribution.

Keywords: Laser Ablation Ion Source; MR-TOF-MS