{"id":20655,"date":"2025-09-22T15:09:29","date_gmt":"2025-09-22T13:09:29","guid":{"rendered":"https:\/\/cms.zdv.uni-mainz.de\/fb08-prisma\/?p=20655"},"modified":"2026-02-09T10:08:59","modified_gmt":"2026-02-09T09:08:59","slug":"woran-forschen-sie-gerade-jonas-stricker","status":"publish","type":"post","link":"https:\/\/prisma.uni-mainz.de\/en\/2025\/09\/22\/woran-forschen-sie-gerade-jonas-stricker\/","title":{"rendered":"What are you currently researching? Jonas Stricker"},"content":{"rendered":"<\/jgu-base-heading>\n\n
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“My heart beats strongly for the natural sciences, for physics AND for chemistry. As a doctoral candidate in nuclear chemistry, I can combine both: I am conducting research within the TACTICa project on the production of radioactive ions – such as atomic thorium (Th+) and thorium monofluoride (ThF+) – which are trapped for quantum logic Spectroscopy in a Paul trap to search for physics beyond the Standard Model. This is a linear Paul trap, similar in function to ion traps used in the work group of Prof. Schmidt-Kaler for quantum computers. <\/p>\n\n\n\n

The radioactive ions are generated by laser evaporation of so-called targets in ultra-high vacuum, whereby, depending on the sample material and laser energy, small, multiply positively charged molecular ions or large, singly charged clusters are found. This research work combines physics and chemistry, as new insights into the chemistry of actinides and their molecules in the gas phase can be gained, and at the same time, the limits of the Standard Model of Physics are re-explored, should these ions one day be used as quantum sensors for the detection of dark matter. <\/p>\n\n\n\n

I produce the chemically tailored targets for such experiments in Prof. D\u00fcllmann’s radioisotope laboratory. We are not only limited to Mainz and the TACTICa project: Various scientists jointly produce samples for research centers worldwide, including for CERN. At the world’s largest research center for Particle Physics, not only PRISMA+ detectors are used, but for the first time, a protactinium sample from the aforementioned radioisotope laboratory was also produced and used for experiments at CERN-ISOLDE. The collaboration with CERN was a real highlight for me, as I not only had the opportunity to produce the sample required for the experiment, but also to participate in the experiment in Geneva myself. It was very fascinating to see how our group was able to make a major contribution to a successful ISOLDE experiment and the first protactinium ion beam was generated at all \u2013 a milestone! <\/p>\n\n\n\n

To my great joy, this experiment once again showed that the interplay of physics and chemistry opens up new avenues in both disciplines. Research in nuclear chemistry offers endless possibilities and I look forward to further discoveries!” <\/p>\n\n\n\n

Jonas Stricker originally comes from chemistry. After his bachelor’s degree in Bonn, he moved to Mainz for his master\u2019s degree in nuclear chemistry in 2020. He started his doctorate in the work group of Prof. Dr. Christoph D\u00fcllmann at the beginning of 2023 and is building a bridge between chemistry and physics with his research. <\/em><\/p>\n\n\n\n

Photo: Jonas Werner Photography<\/p>\n\n\n\n

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