Adsorption interaction of astatine species with quartz and gold surfaces
Creators
- 1. Bern Univ. (Switzerland). Dept. for Chemistry and Biochemistry
- 2. Paul Scherrer Institute, Villigen (Switzerland). Lab. for Radiochemistry and Environmental Chemistry
- 3. Joint Institute for Nuclear Research, Dubna (Russian Federation). Flerov Lab. of Nuclear Reactions
Description
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. (orig.)
Additional details
Publishing Information
- Journal Title
- Radiochimica Acta
- Journal Volume
- 99
- Journal Issue
- 9
- Journal Page Range
- p. 593-599
- ISSN
- 0033-8230
- CODEN
- RAACAP
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 43000034
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ADSORPTION; ARGON 40 REACTIONS; ASTATINE 201; ASTATINE 209; ASTATINE COMPOUNDS; ENTHALPY; FRANCIUM 205; GAS CHROMATOGRAPHY; GOLD; HEAVY ION FUSION REACTIONS; MEV RANGE 100-1000; OXIDES; QUARTZ; REDOX POTENTIAL; SURFACES; THERMOCHROMATOGRAPHY
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ASTATINE ISOTOPES; BETA DECAY RADIOISOTOPES; CHALCOGENIDES; CHROMATOGRAPHY; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; ENERGY RANGE; FRANCIUM ISOTOPES; HALOGEN COMPOUNDS; HEAVY ION REACTIONS; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; ISOTOPES; METALS; MEV RANGE; MINERALS; MINUTES LIVING RADIOISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEOSYNTHESIS; ODD-EVEN NUCLEI; OXIDE MINERALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SEPARATION PROCESSES; SORPTION; SYNTHESIS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS