Wittwer, D.; Dressler, R.; Eichler, R.; Gäggeler, H. W.; Türler, A. (2013). Prediction of the thermal release of transactinide elements (112 ≤ Z ≤ 116) from metals. Radiochimica acta, 101(4), pp. 211-219. Oldenbourg 10.1524/ract.2013.2027
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Metallic catcher foils have been investigated on their thermal release capabilities for future superheavy element studies. These catcher materials shall serve as connection between production and chemical investigation of superheavy elements (SHE) at vacuum conditions. The diffusion constants and activation energies of diffusion have been extrapolated for various catcher materials using an atomic volume based model. Release rates can now be estimated for predefined experimental conditions using the determined diffusion values. The potential release behavior of the volatile SHE Cn (E112), E113, Fl (E114), E115, and Lv (E116) from polycrystalline, metallic foils of Ni, Y, Zr, Nb, Mo, Hf, Ta, and W is predicted. Example calculations showed that Zr is the best suited material in terms of on-line release efficiency and long-term operation stability. If higher temperatures up to 2773 K are applicable, tungsten is suggested to be the material of choice for such experiments.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Wittwer, David, Eichler, Robert, Türler, Andreas |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
0033-8230 |
Publisher: |
Oldenbourg |
Language: |
English |
Submitter: |
Franziska Bornhauser-Rufer |
Date Deposited: |
04 Apr 2014 19:43 |
Last Modified: |
05 Dec 2022 14:31 |
Publisher DOI: |
10.1524/ract.2013.2027 |
Uncontrolled Keywords: |
SHE, Solid catcher, Vacuum chromatography, Diffusion |
BORIS DOI: |
10.7892/boris.46209 |
URI: |
https://boris.unibe.ch/id/eprint/46209 |
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