SAMOP 2021 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 6: New Developments I
MS 6.3: Talk
Tuesday, September 21, 2021, 14:45–15:00, H2
Development of an apparatus for in gas-jet laser spectroscopy of the heaviest elements — •Danny Münzberg1,2,3, Michael Block1,2,3, Arno Claessens4, Piet Van Duppen4, Rafael Ferrer4, Jekabs Roman4, Sandro Kraemer4, Jeremy Lantis3, Mustapha Laatiaoui3, Steven Nothhelfer1,2,3, Sebastian Raeder1,2, Simon Sels4, and Thomas Walther5 — 1GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, DE — 2Helmholtz-Institut Mainz, DE — 3Department Chemie, Johannes Gutenberg-Universität, Mainz, DE — 4Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium — 5Technische Universität Darmstadt
Laser spectroscopy is a commonly used technique for determining basic nuclear and atomic properties. At GSI-Darmstadt, we focus on studying elements in the heavy actinide region. Due to low production rates in these experiments, high efficiency and sensitivity are necessary. The Radiation Detected Resonance Ionization (RADRIS) technique has been used to study isotopes of Nobelium. However, with this technique the spectral resolution is limited to a few GHz, preventing the determination of nuclear properties from hyperfine spectra. To overcome this problem, an in-gas-jet-spectroscopy apparatus is being developed. It combines features of the RADRIS and the in-gas-jet technique to minimize typical broadening mechanisms and improving the spectral resolution by about an order of magnitude. Laser induced fluorescence measurements on Yb and Dy samples have been performed to compare different hypersonic nozzles with respect to the obtained gas-jet conditions for high resolution laser spectroscopy. Recent results will be discussed and an update on the status of the gas jet apparatus will be given.