Stuttgart 2012 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 3: Resonance Ionization MS, ICPMS and others II
MS 3.2: Talk
Monday, March 12, 2012, 17:00–17:15, V57.06
Performance of a high repetition rate pulsed laser system for in-jet laser ionization and spectroscopy studies in the Leuven laser ion source, LISOL — •Volker Sonnenschein1, Rafael Ferrer2, Mark Huyse2, Tobias Kron3, Yuri Kudryavtsev2, Nathalie Lecesne4, Iain Moore1, Johannes Rossnagel3, Sebastian Raeder5, Herve Savajols4, Paul Van den Bergh2, Piet Van Duppen2, and Klaus Wendt3 — 1University of Jyväskylä, Finland — 2Instituut voor Kern- en Stralingsfysika, Katholieke Universiteit Leuven — 3Institut für Physik, Universität Mainz — 4GANIL, Caen, France — 5TRIUMF, Vancouver, Canada
The laser ionization efficiency of the Leuven gas cell-based laser ion source at the LISOL facility was investigated under on- and off-line conditions using two distinctly
different laser systems - a medium repetition rate dye laser system (200 Hz) as well a high repetition rate Ti:sapphire laser system (10 kHz). A systematic study of the ion signal dependence on repetition rate and laser pulse energy was performed in off-line tests on stable cobalt and copper isotopes. Off-line studies also included high resolution in-jet laser spectroscopy measurements of the hyperfine structure of 63Cu and the investigation of laser ion pulse time profiles.
A final on-line run with the short-lived radioisotope 59Cu showed a very comparable yield from the two laser systems for in-cell ionization, however, a considerable advantage of using the high-repetition rate system for in-jet laser ionization within the sextupole extraction structure could be demonstrated.