Ch.E. Dullmann

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physics.atom-ph2025

Study of thorium in hypersonic gas jets: Ionization potentials of Th and Th $^{+}$

A. Claessens, F. Ivandikov, M. Brasseur +10

Laser ionization spectroscopy was performed on both neutral and singly ionized $^{232}$ Th with the aim of identifying the nuclear-clock isomer in the singly charged ionic state of…

physics.atom-ph2025

Laser fluence-dependent production of molecular thorium ions in different charge states for trapped-ion experiments

Jonas Stricker, Jean Velten, Valerii Andriushkov +8

Thorium ions and molecules, recognized for their distinctive nuclear and atomic attributes, are central to numerous trapped-ion experiments globally. Our study introduces an effect…

physics.atom-ph2025

Laser spectroscopy on the hyperfine structure and isotope shift of sympathetically cooled $^{229}$ Th $^{3 +}$ ions

G. Zitzer, J. Tiedau, Ch. E. DÃ¼llmann +2

The hyperfine structure of $^{229}$ Th $^{3 +}$ ions in the nuclear ground state is investigated via laser spectroscopy of trapped Th $^{3 +}$ ions that are sympathetically cooled by la…

Study of thorium in hypersonic gas jets: Ionization potentials of Th and Th+

Laser fluence-dependent production of molecular thorium ions in different charge states for trapped-ion experiments

Laser spectroscopy on the hyperfine structure and isotope shift of sympathetically cooled 229Th3+ ions

Study of thorium in hypersonic gas jets: Ionization potentials of Th and Th $^{+}$

Laser spectroscopy on the hyperfine structure and isotope shift of sympathetically cooled $^{229}$ Th $^{3 +}$ ions