Abstract
In the development towards the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS), an optical detection region for the observation of fluorescent light is added to an electrostatic ion beam trap (EIBT). In addition to its use for highly sensitive collinear laser spectroscopy, this fluorescence detection is introduced as a diagnostics tool for the study of the ion dynamics inside an EIBT. First measurements of collision-induced fluorescence in an EIBT demonstrate the technique’s diagnostics power by tracking the evolution of an ion bunch’s temporal width over its storage time inside the ion trap. Thereby, the time-focus point of the ion bunch can be determined and the influence of space-charge effects in the EIBT can be investigated. Good qualitative agreement is obtained between the measured trend of temporal widths and the simulations of the ions’ trajectories in the trap. Particularly, the observation of self-bunching on the ion-bunch structure for many simultaneously stored ions is reproduced.
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Acknowledgements
Open access funding provided by TU Wien (TUW). The research leading to these results has received funding from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme under grant agreement No 679038. P.F. acknowledges support by the German Ministry for Education and Research (BMBF, 05P15HGCIA). The authors would like to thank S. Sailer and L. Bartels for their earlier contributions to MIRACLS. We are grateful for support form CERN, ISOLDE, and MPI K Heidelberg.
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This article is part of the Topical Collection on Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2019), Goa, India, 10-15 February 2019
Edited by S. N. Mishra, P. L. Paulose and R. Palit
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Lechner, S., Fischer, P., Heylen, H. et al. Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps. Hyperfine Interact 240, 95 (2019). https://doi.org/10.1007/s10751-019-1628-1
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DOI: https://doi.org/10.1007/s10751-019-1628-1
Keywords
- MIRACLS
- Collinear laser spectroscopy
- MR-ToF devices
- EIBT
- Exotic radionuclides
- Collision-induced fluorescence
- Ion self-bunching