Mainz 2017 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 3: Resonance Ionization MS and others
MS 3.3: Vortrag
Dienstag, 7. März 2017, 12:00–12:15, RW 2
Laser resonance photoionization spectroscopy on lutetium atoms within the MEDICIS project — •Vadim Gadelshin1, Thomas Cocolios2, Reinhard Heinke1, Tom Kieck1, Bruce Marsh3, Pascal Naubereit1, Sebastian Rothe3, Thierry Stora3, Dominik Studer1, Piet Van Duppen2, and Klaus Wendt1 — 1Institute of Physics, Mainz University, Germany — 2Institute for Nuclear and Radiation Physics, KU Leuven, Belgium — 3EN Department, CERN, Switzerland
Lutetium is one of the most relevant lanthanides for the MEDICIS Project, aimed at production of innovative radiopharmaceuticals for nuclear medicine, because of extraordinary properties of its medical radioisotope Lu-177. As a part of separation technology used in the project, laser resonance ionization requires an appropriate multi-step excitation scheme for the element of interest, which will ensure the most efficient ionization process. The current report presents the results of laser resonance photoionization spectroscopy on lutetium atoms with a tunable pulsed Titanium:Sapphire laser system. In several experimental periods, various two-step ionization schemes were investigated, suitable highly efficient excitation schemes were selected, which possess a combination of high transition strength of the first excitation step together with strong transition into an auto-ionizing state. The achieved level of the lutetium ionization efficiency in different laser excitation schemes will be presented. Further research is going to be undertaken for other relevant rare-earth elements: terbium and neodymium.