Erlangen 2018 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 10: Poster 2

MS 10.1: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Orangerie

Resonant Laser Ionization Spectroscopy for Highly Selective Extraction of Specific Lanthanides — •Felix Weber, Vadim Gadelshin, Dominik Studer, Pascal Naubereit, and Klaus Wendt — Johannes Gutenberg-Universität, Mainz

Resonance ionization spectroscopy is a versatile technique for efficient and selective ionization as well as to study the energy levels of exotic species. Due to the unique energy level structure a multi-step ionization scheme is selective for a specific element. The combination of resonance ionization with techniques from mass spectrometry allows the selection of a single isotope of interest. The LARISSA group in Mainz uses a high-repetition rate pulsed Ti:sapphire laser system with tunability from about 680 to 1000 nm for spectroscopy, which can be extended using frequency doubling, tripling and quadrupling. All lanthanide elements can be ionized by a two stage excitation using SHG for both steps. An automatized tunable grating laser with intra-cavity frequency doubling provides high output power over a wide wavelength range. In order to combine high ionization efficiency and selectivity with the ability to rapidly switch between different lanthanides, dedicated ionization schemes are developed at Johannes Gutenberg University Mainz. These will be used within the CERN-MEDICIS project which aims to produce lanthanide isotopes for medical applications and in addition serve as preparation for few-element detection of minor actinides by laser based ultratrace determination techniques.