Köln 2025 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 7: New Methods, Technical Development II
MS 7.2: Vortrag
Donnerstag, 13. März 2025, 15:00–15:15, HS 2 Chemie
Status of the MR-ToF MS for JetRIS for laser spectroscopy of heavy actinides at GSI/HIM — •J. Weyrich1,2,3, M. Block1,2,3, A. Brizard4, C. Helmel2,3, D. Münzberg1,2,3, P. Fischer5, S. Raeder1,2, D. Rodríguez7, M. Schlaich6, L. Schweikhard5, K. Wendt3, and F. Wienholtz6 — 1GSI, Darmstadt, DE — 2Helmholtz-Institut, Mainz, DE — 3JGU, Mainz, DE — 4GANIL, Caen, France — 5Universität Greifswald, Greifswald, DE — 6Technische Universität, Darmstadt, DE — 7Universidad de Granada
Research on heavy and superheavy elements enhances our understanding of the nuclear structure, as these elements exist just due to nuclear shell effects. These elements are radioactive, with short half-lives, and produced only in limited quantities. As a result, techniques like Resonant Ionization Spectroscopy (RIS) play a crucial role in studying atomic spectra to determine atomic and nuclear properties. The in-gas Jet Resonant Ionization Spectroscopy (JetRIS) experiment at GSI in Darmstadt, Germany, allows spectroscopy of heavy elements on minute amounts and with a spectral resolution of down to 260 MHz. JetRIS currently utilizes α-decay detection to selectively measure isotopes achieving low to zero background. However, this method is not suitable for long-lived isotopes or those without an α-decay branch. Thus, a Multi-Reflection Time-of-Flight Mass Spectrometer (MR-ToF MS) [DOI: 10.1016/j.ijms.2023.117166] will be integrated into the JetRIS setup enabling ion detection through mass-to-charge ratio separation. This contribution will discuss the MR-ToF MS setup, its commissioning status, and the latest experimental results.
Keywords: Super Heavy Elements; MR-ToF MS; Spectroscopy