Berlin 2014 – scientific programme
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A: Fachverband Atomphysik
A 9: Precision spectroscopy of atoms and ions II (with Q)
A 9.4: Talk
Monday, March 17, 2014, 14:45–15:00, BEBEL E42
Towards isotope shift and hyperfine structure measurements of the element nobelium — •Premaditya Chhetri1, Mustapha Laatiaoui2, Felix Lautenschläger1, Michael Block2,3, Werner Lauth4, Hartmut Backe4, Thomas Walther1, Peter Kunz5, and Fritz-Peter Hessberger2,3 — 1Institut für Angewandte Physik, TU Darmstadt, D-64289 Darmstadt — 2Helmholtz Institut Mainz, D-55099 Mainz — 3GSI, D-64291 Darmstadt — 4Institut für Kernphysik, JGU Mainz, D-55122 Mainz — 5TRIUMF, D-V6T2A3 Vancouver, Canada
Laser spectroscopy on the heaviest elements is of great interest as it allows the study of the evolution of relativistic effects on their atomic structure. In our experiment we exploit the Radiation Detected Resonance Ionization Spectroscopy technique and use excimer-laser pumped dye lasers to search for the first time the 1P1 level in 254No. Etalons will be used in the forthcoming experiments at GSI, Darmstadt, to narrow down the bandwidth of the dye lasers to 0.04 cm−1, for the determination of the isotope shift and hyperfine splitting of 253, 255No. In this talk results from preparatory hyperfine structure studies in nat. ytterbium and the perspectives for future experiments of the heaviest elements will be discussed.