Freiburg 2024 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 4: Poster
MS 4.10: Poster
Dienstag, 12. März 2024, 17:00–19:00, Aula Foyer
A new ion cooler for HAMSTER — •Alexander Wieser1,2, Johannes Lachner1, Stefan Findeisen1, Martin Martschini2, Toralf Döring1, Toni Wallner1, and Robin Golser2 — 1HZDR - Accelerator Mass Spectrometry and Isotope Research — 2University of Vienna - Faculty of Physics, Isotope Physics
Using laser photodetachment for isobar separation in Accelerator Mass Spectrometry (AMS) was successfully established with the Ion-Laser Interaction Mass Spectrometry (ILIAMS) system at the Vienna Environmental Research Accelerator, enlarging the repertoire of long-lived radioisotopes measurable by AMS. The ion beam is overlapped with a laser beam of suitable photon energy, neutralizing interfering isobars, while leaving the isotope of interest unaffected. To maximize interaction time between laser beam and ion beam, the 30 keV ions are decelerated and cooled in a gas-filled radiofrequency quadrupole to near-thermal energies. A similar setup called ILTIS (Ion Linear Trap for Isobar Suppression) was designed at HZDR in cooperation with the University of Vienna and will be incorporated in the new 1 MV-accelerator facility HAMSTER. With a powerful 532 nm cw-laser, this ion cooler will enable HAMSTER to measure 36Cl, 26AlO, 90Sr and 135,137Cs at environmental abundances. This poster will give an overview on design and first ion beam tests of the new ion cooler.
Keywords: Ion cooler; ILIAMS; HAMSTER; radiofrquency quadropole