| Autor: |
Dressler, Rugard, Vascon, Alessio, Asai, Masato, Türler, Andreas, Toyoshima, Atsushi, Mitsukai, Akina, Schädel, Matthias, Kaneya, Yusuke, Tsukada, Kazuaki, Piguet, Dave, Sato, Tetsuya K., Steinegger, Patrick, Eichler, Robert, Takeda, Shinsaku, Nagame, Yuichiro |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| DOI: |
10.7892/boris.93790 |
| Popis: |
An isothermal vacuum chromatography setup for superheavy element chemistry studies was developed and tested online at the one-atom-at-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 184Tl (t1/2 = 10.1(5) s) was produced in the reaction 152Gd(35Cl, 3n)184Tl 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 −ΔHadsSiO2(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 (t1/2 < 1 s), surpassing the rapidity of today’s state-of-the-art gas-phase experiments by at least 1 order of magnitude. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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