Hamburg 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

A: Fachverband Atomphysik

A 15: Poster I

A 15.12: Poster

Dienstag, 3. März 2009, 16:30–19:00, VMP 9 Poster

Laser source for spectroscopy of trapped highly charged bismuth ions — •Sebastian Albrecht, Norbert Herschbach, Gerhard Birkl, and the SPECTRAP collaboration — Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstraße 7, D-64289 Darmstadt

Our objective is to investigate the ground state hyperfine splitting of highly charged ions. Unprecedented precision and accuracy will be achieved by applying high resolution laser spectroscopy to ions cooled and stored in a Penning trap. This experiment is carried out as part of the SPECTRAP collaboration at GSI within the HITRAP facility.

For highly charged ²⁰⁹Bi⁸²⁺ ions, transitions between hyperfine ground states can be excited using light at 243.9 nm. We prepared a laser source delivering 20 mW for spectroscopy of these transitions. The scheme we developed to control the laser frequency aims at an accuracy of 2 MHz with respect to an atomic transition used as reference.