Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Invited Talks

HK 19.2: Invited Talk

Wednesday, March 18, 2026, 11:30–12:00, MED 00.915

Recent results from laser spectroscopy with CRIS at ISOLDE: nuclear structure studies and beyond — •Jessica Warbinek for the CRIS collaboration — CERN, Switzerland — KU Leuven, Belgium

Over the past decade, collinear resonance ionization spectroscopy (CRIS) has developed into a versatile platform for studying atomic and nuclear properties of rare and short-lived quantum systems. CRIS enables high-precision measurements of trends in nuclear charge radii, electromagnetic moments, and the determination of nuclear spins across the nuclear chart, even for isotopes produced at rates as low as a few tens of ions per second. Recent advances have significantly improved the sensitivity toward the most exotic isotopes and expanded the scope and versatility of the technique.

CRIS has opened a new experimental frontier through the first study of short-lived radioactive molecules, in particular RaF, which provide promising platforms for precision tests of fundamental symmetries and searches for physics beyond the standard model at low energies. The production and studies of negative molecular ions further lay the groundwork for proposed future cooling and trapping approaches.

This contribution highlights recent results from CRIS and experimental developments instrumental in achieving them. Future opportunities for precision studies of exotic nuclei at ISOLDE will be outlined.

Keywords: Laser spectroscopy; Nuclear ground-state properties; Atomic & molecular structure; Radioactive molecules