Adsorption interaction of astatine species with quartz and gold surfaces

A. Serov; N. Aksenov; G. Bozhikov; R. Eichler; R. Dressler; V. Lebedev; O. Petrushkin; D. Piguet; S. Shishkin; E. Tereshatov; A. Türler; A. Vögele; D. Wittwer; H. W. Gäggeler

doi:10.1524/ract.2011.1850

Adsorption interaction of astatine species with quartz and gold surfaces

A. Serov, N. Aksenov, G. Bozhikov, R. Eichler, R. Dressler, V. Lebedev, O. Petrushkin, D. Piguet, S. Shishkin, E. Tereshatov, A. Türler, A. Vögele, D. Wittwer, H. W. Gäggeler

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The adsorption interaction of various astatine species with quartz and gold surfaces was investigated by gas chromatography methods. Due to variations of the redox potential of the carrier gas elemental astatine, astatine oxide and hypo-astatic acid have been produced. The identification of the astatine compounds is based on the analogy assumption to the gas phase chemistry of the closest homologues in group 17 of the periodic table, iodine and bromine. The deposition temperatures as well as enthalpies of adsorption have been determined for the astatine species. The enhancement of the metallic character within group 17 towards higher Z is clearly confirmed. Macroscopic properties (sublimation enthalpy) of previously unstudied AtO₂ and HAtO were estimated. The determined data for elemental astatine were compared to available literature data. Based on the obtained experimental results possible designs of experiments for studying of chemical properties of the recently discovered element 117 can be suggested.

Original language	English
Pages (from-to)	593-599
Number of pages	7
Journal	Radiochimica Acta
Volume	99
Issue number	9
DOIs	https://doi.org/10.1524/ract.2011.1850
State	Published - Sep 2011
Externally published	Yes

Funding

Acknowledgment. This work was supported by the Swiss National Science Foundation (grant: 200020-117671/1) and by the RFBR (grant No. 09-03-12029-ofi_m).

Funders	Funder number
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	200020-117671/1
Russian Foundation for Basic Research	09-03-12029-ofi_m

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title = "Adsorption interaction of astatine species with quartz and gold surfaces",

abstract = "The adsorption interaction of various astatine species with quartz and gold surfaces was investigated by gas chromatography methods. Due to variations of the redox potential of the carrier gas elemental astatine, astatine oxide and hypo-astatic acid have been produced. The identification of the astatine compounds is based on the analogy assumption to the gas phase chemistry of the closest homologues in group 17 of the periodic table, iodine and bromine. The deposition temperatures as well as enthalpies of adsorption have been determined for the astatine species. The enhancement of the metallic character within group 17 towards higher Z is clearly confirmed. Macroscopic properties (sublimation enthalpy) of previously unstudied AtO2 and HAtO were estimated. The determined data for elemental astatine were compared to available literature data. Based on the obtained experimental results possible designs of experiments for studying of chemical properties of the recently discovered element 117 can be suggested.",

author = "A. Serov and N. Aksenov and G. Bozhikov and R. Eichler and R. Dressler and V. Lebedev and O. Petrushkin and D. Piguet and S. Shishkin and E. Tereshatov and A. T{\"u}rler and A. V{\"o}gele and D. Wittwer and G{\"a}ggeler, {H. W.}",

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AU - Serov, A.

AU - Aksenov, N.

AU - Bozhikov, G.

AU - Eichler, R.

AU - Dressler, R.

AU - Lebedev, V.

AU - Petrushkin, O.

AU - Piguet, D.

AU - Shishkin, S.

AU - Tereshatov, E.

AU - Türler, A.

AU - Vögele, A.

AU - Wittwer, D.

AU - Gäggeler, H. W.

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AB - The adsorption interaction of various astatine species with quartz and gold surfaces was investigated by gas chromatography methods. Due to variations of the redox potential of the carrier gas elemental astatine, astatine oxide and hypo-astatic acid have been produced. The identification of the astatine compounds is based on the analogy assumption to the gas phase chemistry of the closest homologues in group 17 of the periodic table, iodine and bromine. The deposition temperatures as well as enthalpies of adsorption have been determined for the astatine species. The enhancement of the metallic character within group 17 towards higher Z is clearly confirmed. Macroscopic properties (sublimation enthalpy) of previously unstudied AtO2 and HAtO were estimated. The determined data for elemental astatine were compared to available literature data. Based on the obtained experimental results possible designs of experiments for studying of chemical properties of the recently discovered element 117 can be suggested.

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Adsorption interaction of astatine species with quartz and gold surfaces

Abstract

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