Journalartikel

Autorenliste: Yu, Jiajun; Hornung, Christine; Dickel, Timo; Plass, Wolfgang R.; Amanbayev, Daler; Bergmann, Julian; Ge, Zhuang; Greiner, Florian; Geissel, Hans; Groef, Lizzy; Kripko-Koncz, Gabriella; Narang, Meetika; Rink, Ann-Kathrin; Scheidenberger, Christoph; Zhao, Jianwei

Jahr der Veröffentlichung: 2024

Zeitschrift: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Bandnummer: 1064

ISSN: 0168-9002

eISSN: 1872-9576

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1016/j.nima.2024.169371

Verlag: Elsevier

Abstract: 
A Laser Ablation Carbon Cluster Ion source (LACCI) has been developed and commissioned at the FRS Ion Catcher at GSI. It is the first laser ablation ion source for long-term measurements with a multiple -reflection time -of -flight mass spectrometer (MR-TOF-MS). This is enabled by two key developments: (i) a two-dimensional movable target platform that ensures the long-term stable production of ions and (ii) a mass filter for the isolation of the ions of interest. LACCI is capable of providing closely -spaced reference ions in the mass range up to similar to 300 u for accurate mass measurements of exotic nuclei (relative mass uncertainty similar to 10 -8 ) and systematic studies of the mass uncertainties with the multiple -reflection time -of -flight mass spectrometer. Investigations of the laser energy and repetition rate and long-term measurements have been carried out with carbon targets (Sigradur (R) , Fullerene) and metallic targets (silver, gold, copper, tungsten, and erbium). In a test experiment, LACCI has delivered a stable ion current for more than 20 h at a laser repetition rate of 100 Hz, corresponding to an operation for one week at 10 Hz. It thus fully satisfies the requirements for long-term accurate mass measurements of exotic nuclei with an MR-TOF-MS. This enables the access of exotic ions, detected with rates as low as 0.1 per hour at the FRS Ion Catcher.

Harvard-Zitierstil: Yu, J., Hornung, C., Dickel, T., Plass, W., Amanbayev, D., Bergmann, J., et al. (2024) A laser ablation carbon cluster ion source for the FRS Ion Catcher, Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1064, Article 169371. https://doi.org/10.1016/j.nima.2024.169371

APA-Zitierstil: Yu, J., Hornung, C., Dickel, T., Plass, W., Amanbayev, D., Bergmann, J., Ge, Z., Greiner, F., Geissel, H., Groef, L., Kripko-Koncz, G., Narang, M., Rink, A., Scheidenberger, C., & Zhao, J. (2024). A laser ablation carbon cluster ion source for the FRS Ion Catcher. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1064, Article 169371. https://doi.org/10.1016/j.nima.2024.169371