Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 37: Precision Spectroscopy of Atoms and Ions VII

A 37.3: Talk

Friday, March 6, 2009, 15:00–15:15, VMP 6 HS-B

High-resolution collinear laser spectroscopy as a tool for precise high-voltage determination — •R. Sánchez¹, A. Krieger², Z. Andjelkovic², R. Cazan², K. Blaum³, M.L. Bissell⁴, G.W.F. Drake⁵, Ch. Geppert¹, M. Kowalska⁴, J. Krämer², R. Neugart², F. Schmidt-Kaler⁶, D. Tiedemann², Z.-C. Yan⁷, D. Yordanov⁴, M. Žáková², C. Zimmermann⁸, and W. Nörtershäuser^1,2 — ¹GSI Helmholtzzentrum für Schwerionenförschung GmbH, Darmstadt, Germany — ²Institut für Kernchiemie, Universität Mainz, Germany — ³Max-Planck Institut für Kernphysik, Heidelberg, Germany — ⁴Physics Department, CERN, Geneva, Switzerland — ⁵Department of Physics, University of Windsor, Canada — ⁶Quanteninformationsverarbeitung, Universität Ulm, Germany — ⁷Department of Physics, University of New Brunswick, Canada — ⁸Physikalisches Institut, Universität Tübingen, Germany

For more that 25 years collinear laser spectroscopy has provided outstanding results of ground-state nuclear structure properties. This technique has been successfully applied to measure isotope shifts (IS) of long chains of mid-Z isotopes at ISOL facilities. However IS measurements performed on low-Z do not reach the required accuracy mainly because the large uncertainty introduced in the determination of the high-voltage applied to the extraction electrodes at the target region. We have now found a way to determine precisely this parameter by measuring the transition frequencies via high-resolution collinear laser spectroscopy. In this contribution we report on the technique and the results we obtained at COLLAPS, ISOLDE-CERN.