An isothermal vacuum chromatography setup for superheavy element chemistry studies was developed and tested online at the one-atomat-a-time level. As a model system, the adsorption behavior of thallium on quartz was chosen with respect to a future chemical characterization of its superheavy homologue, element 113 (E113, Z = 113), using the described setup. Short-lived 184 Tl (t 1/2 = 10.1(5) s) was produced in the reaction 152 Gd( 35 Cl, 3n) 184 Tl and delivered as a mass-separated ion beam to the chemistry experiment: A subsurface implantation and a subsequent fast thermal release from a metal matrix was followed by isothermal vacuum chromatography as the chemical separation stage. Single atomic species passing this chromatographic separation were finally identified by time-and energy-resolved event-by-event α-spectroscopy using a diamond-based solid-state detector. The derived adsorption enthalpy of −ΔH ads SiO 2 (Tl) = 158 ± 3 kJ•mol −1 significantly exceeds available data but correlates well with the adsorption of other elements studied on the same surface. The described technique enables chemical experiments with short-lived transactinide elements (t 1/2 < 1 s), surpassing the rapidity of today's state-of-the-art gas-phase experiments by at least 1 order of magnitude.

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