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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Instrumentation VII

HK 26.4: Vortrag

Dienstag, 29. März 2022, 16:45–17:00, HK-H3

Proof-of-Principle of Collinear Laser Spectroscopy on Neutral Atoms following Photodetachment — •Laura Renth¹, Bernhard Maaß^1,4, Dag Hanstorp³, Phillip Imgram¹, Daniel Koestel², Di Lu³, Wilfried Nörtershäuser¹, and Thomas Walther² — ¹IKP, TU Darmstadt — ²IAP, TU Darmstadt — ³University of Gothenburg — ⁴Argonne National Laboritory, Chicago, USA

At the Collinear Apparatus for Laser Spectroscopy and Applied Physics (COALA) [1] in Darmstadt a new experimental approach was tested to perform collinear laser spectroscopy on boron atoms produced from a negative ion sputtering source.

An ion sputtering source produced negatively charged boron ions which where then guided into the COALA beamline. From this ion beam an atomic beam was created by photodetachement with a pulsed laser. Then, collinear laser spectroscopy was performed for the 2p ²P_1/2 → 3s ²S_1/2 and for the 2p ²P_3/2 → 3s ²S_1/2 transitions of ¹¹B and on the the 2p ²P_3/2 → ³s ²S_1/2 transition of ¹⁰B. The resonance was only observed after implementing new diagnostic tools at COALA, namely a Wien filter and the generation of short ion pulses to perform time-of-flight (TOF) spectrometry. First results will be presented and the potential of this approach are discussed.

[1] K. König, J. Krämer, C. Geppert, P. Imgram, B. Maaß, T. Ratajczyk, W. Nörtershäuser. A New Collinear Apparatus for Laser Spectroscopy and Applied Science (COALA). Rev. Sci. Instr. 91, 081301 (2020).