Abstract
The sensitive RAdiation Detected Resonance Ionization Spectroscopy (RADRIS) technique enabled the study of the atomic structure of the element nobelium (No, Z = 102) for the first time. The prospect of accessing the next element, lawrencium (Lr, Z = 103), depends on the efficiency and speed of evaporation of sample atoms from a filament catcher. To determine the desorption properties with respect to the requirements for the RADRIS technique, an off-line set-up to characterize filament catchers was developed. Using the iso-electronic homologue lutetium (Lu, Z= 71) different filament materials were studied with respect to the required desorption temperatures and the background from surface ionization.
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Acknowledgements
Open Access funding provided by Projekt DEAL. This work was supported by the Helmholtz Association. We are especially indebted to B. Lommel, B. Kindler and V. Yakusheva from the GSI target laboratory for their efforts in coating the filaments for this study.
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This article is part of the Topical Collection on Proceedings of PLATAN 2019, 1st International Conference, Merger of the Poznan Meeting on Lasers and Trapping Devices in Atomic Nuclei Research and the International Conference on Laser Probing, Mainz, Germany 19-24 May 2019
Edited by Krassimira Marinova, Michael Block, Klaus D.A. Wendt and Magdalena Kowalska
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Murböck, T., Raeder, S., Chhetri, P. et al. Filament studies for laser spectroscopy on lawrencium. Hyperfine Interact 241, 35 (2020). https://doi.org/10.1007/s10751-019-1689-1
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DOI: https://doi.org/10.1007/s10751-019-1689-1