Stuttgart 2012 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 6: Poster
MS 6.14: Poster
Dienstag, 13. März 2012, 16:30–19:00, Poster.IV
High resolution in-jet resonance ionization laser spectroscopy using an injection-locked Ti:sapphire laser @ RIKEN — •Volker Sonnenschein1, Hideki Tomita2, Iain Moore1, Mikael Reponen1, Tetsuo Sonoda3, Michiharu Wada3, and Klaus Wendt4 — 1Institute of Physics, University of Jyväskylä, Finland — 2Department of Quantum Engineering, University of Nagoya, Japan — 3RIKEN, Tokyo, Japan — 4University of Mainz, Germany
The combination of resonant laser ionization with a radiofrequency based ion guide extraction structure from a gas cell or hot cavity has proven to provide high purity ion beams at radioactive ion beam facilities. So far this technique has been predominantly applied in combination with a hot cavity atomizer, i.e. as the Laser Ion Source Trap (LIST) at ISOLDE. The adaptation of this technique at facilities using a buffer gas-filled stopping chamber like JYFL, LISOL, or BigRIPS to stop and extract nuclear reaction products should provide further benefits. The velocity spread of the atoms exiting the target chamber in a supersonic jet is greatly reduced allowing for in-jet high resolution studies of hyperfine structures as well as isotope shifts of the produced isotopes. An injection locked pulsed Ti:sapphire laser is an ideal system for studies in this environment as it provides both a narrow bandwidth of less than 20 MHz as well as high photon flux enabling efficient single pass frequency conversion to access the corresponding atomic ground state transition wavelengths for the first step of the resonant ionization process. A description of modifications made to the existing laser geometry will be given together with first spectroscopic results.