München 2019 – wissenschaftliches Programm
HK 54.49: Poster
Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium
12C3+ fine structure transitions measured with a detection system for forward emitted XUV photons at the ESR — •Daniel Winzen1, Michael Bussmann2, Axel Buß1, Christian Egelkamp1, Lewin Eidam3, Volker Hannen1, Zhongkui Huang4, Daniel Kiefer3, Sebastian Klammes3, Thomas Kühl5,6,7, Markus Loeser2, Xinwen Ma4, Wilfried Nörtershäuser3, Hans-Werner Ortjohann1, Rodolfo Sánchez3,5, Mathias Siebold2, Thomas Stöhlker5,6,8, Johannes Ullmann3,6,8, Jonas Vollbrecht1, Thomas Walther3, Hanbing Wang4, Christian Weinheimer1, and Danyal Winters5 — 1WWU Münster — 2HZDR Dresden — 3TU Darmstadt — 4IMP Lanzhou — 5GSI Darmstadt — 6HI Jena — 7JGU Mainz — 8FSU Jena
The Institut für Kernphysik in Münster developed an XUV-photon detection system for laser spectroscopy measurements at the ESR (GSI/FAIR). In a test beam time for laser cooling with 12C3+-ions at β≈0.47, the 2S1/2−2P1/2 and the 2S1/2−2P3/2 transitions were investigated to commission the system. The detector features a movable cathode plate which is brought into the vicinity of the beam to collect forward emitted Doppler shifted photons (λlab≈93 nm). These photons produce mostly low energetic (<3 eV) secondary electrons which are electromagnetically guided onto an MCP detector. The working principle of the detector as well as the results of the beam time will be presented. This work is supported by BMBF under contract number 05P15PMFAA. D. Winzen thanks HGS-Hire for FAIR for funding his scholarship.