Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 28: Precision Spectroscopy V - highly charged ions (joint session A/Q)
A 28.7: Vortrag
Mittwoch, 7. März 2018, 15:30–15:45, K 1.016
Commissioning of a detection system for forward emitted XUV photons at the ESR — M. Bussmann1, A. Buß2, C. Egelkamp2, L. Eidam3, V. Hannen2, Z. Huang4, D. Kiefer5, S. Klammes5, Th. Kühl6,7,8, M. Loeser1, X. Ma4, W. Nörtershäuser9, H.-W. Ortjohann2, R. Sánchez6,9, M. Siebold1, Th. Stöhlker6,7,10, J. Ullmann7,9,10, J. Vollbrecht2, Th. Walther5, H. Wang4, Ch. Weinheimer2, D. Winters6, and •D. Winzen2 — 1Helmholtz-Zentrum Dresden-Rossendorf — 2Institut für Kernphysik, WWU Münster — 3Institut für Theorie Elektromagnetischer Felder, TU Darmstadt — 4Institute of Modern Physics, CAS Lanzhou — 5Institut für Angewandte Physik, TU Darmstadt — 6GSI, Darmstadt — 7Helmholtz-Institut Jena — 8Institut für Physik, Uni Mainz — 9Institut für Kernphysik, TU Darmstadt — 10Institut für Optik und Quantenelektronik, Uni Jena
The Institut für Kernphysik in Münster developed an XUV-photon detection system for laser spectroscopy measurements at the ESR. 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). The photons produce mostly low energetic (<3 eV) secondary electrons which are electromagnetically guided onto an MCP detector. Preliminary results of the beam time will be presented. This work is supported by BMBF under contract number 05P15PMFAA.