Heidelberg 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 52: Precision Spectroscopy of Atoms and Ions III (with A)
Q 52.7: Vortrag
Donnerstag, 26. März 2015, 12:30–12:45, M/HS1
Search for the 1P1 level in 254No in a buffer-gas cell — •Felix Lautenschläger1, Hartmut Backe2, Michael Block3,4, Bradley Cheal5, Premaditya Chhetri1, Peter Kunz6, Fritz-Peter Heßberger3,4, Mustapha Laatiaoui3,4, Werner Lauth2, Sebastian Raeder7, Thomas Walther1, and Calvin Wraith5 — 1Technische Universität Darmstadt, Deutschland — 2Johannes Gutenberg-Universität Mainz, Deutschland — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, Deutschland — 4Helmholtzinstitut Mainz, Deutschland — 5University of Liverpool, Großbritannien — 6TRIUMF, Kanada — 7Katholieke Universiteit Leuven, Belgien
The atomic structure of the heaviest elements (Z>100) is strongly affected by relativistic effects. Their description in modern Relativistic-Coupled-Clusters and Multi-Configuration-Dirac-Fock theories can be benchmarked by laser spectroscopy of the atomic levels in 254No, which has a simple atomic structure allowing precise predictions of the atomic transitions. At present, no experimental information is available for the atomic levels of 254No. It can be produced using the nuclear fusion reaction 208Pb(48Ca,2n)254No. In our experiment, we employ the Radioation Detected Resonance Ionization Spectroscopy in a buffer-gas cell behind the velocity-filter SHIP at GSI. In a recent experiment the search for the predicted 5f147s7p 1P1 level in 254No has been continued. First results of this measurement campaign will be presented.