Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 6: Atomic Systems in External Fields I
A 6.1: Vortrag
Montag, 11. März 2024, 17:00–17:15, HS 1098
Characterization of the Field Ionization Laser Ion Source and Trap FI-LIST — •Magdalena Kaja1, Dominik Studer2,3, Reinhard Heinke4, Tom Kieck2,3, and Klaus Wendt1 — 1Institute of Physics, Johannes Gutenberg University Mainz, Germany — 2Jakob-Steffan-Strasse 3 — 3Helmholtz Institute Mainz, Germany — 4STI group, SY department, CERN, Switzerland
We present the development and initial application of the Field Ionization Laser Ion Source and Trap (FI-LIST) at the RISIKO mass separator at Mainz University. Derived from the well-established LIST and PI-LIST units previously developed at Mainz [1,2,3] and successfully implemented at CERN-ISOLDE [4,5,6], the FI-LIST is specifically tailored for field ionization of highly excited atoms within a well-controlled homogeneous electric field. To evaluate its potential for future applications in the field of rare radioactive species, e.g. actinides, we performed ionization potential (IP) measurements on ytterbium, a case where the IP is precisely known. Employing the saddle-point model, we determined the IP value with a relative precision of 3 · 10−6, showing perfect agreement with the literature value and confirming the expectations of the device.
[1] K. Blaum, et. al., NIM B 204 (2003) 331-335
[2] K. Wendt, et. al., Nucl. Phys. A 746 (2004) 47-53,
[3] F. Schwellnus, et al., NIM B 266 (19) (2008) 4383-4386
[4]D. Fink, et. al., NIM B 344 (2015) 83-95
[5] D. A. Fink, Phys. Rev. X 5 (2015)
[6] R. Heinke, et. al., NIMB 541 (2023) 8-12
Keywords: Resonance ionization laser ion source; Laser spectroscopy; Electric field ionization