Cupak, C., Pitthan, E., Moro, M. V., Fellinger, M., Primetzhofer, D., & Aumayr, F. (2022). Retention of deuterium in beryllium: A combined investigation using TDS, ERDA and EBS. Nuclear Materials and Energy, 33, 101249-1-101249–7. https://doi.org/10.1016/j.nme.2022.101249
E134-03 - Forschungsbereich Atomic and Plasma Physics
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Journal:
Nuclear Materials and Energy
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ISSN:
2352-1791
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Date (published):
14-Sep-2022
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Number of Pages:
7
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Publisher:
ELSEVIER
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Peer reviewed:
Yes
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Keywords:
Deuterium; Beryllium; Retention; Ion beam analysis; Temperature desorption spectroscopy
en
Abstract:
We have studied the retention of deuterium in beryllium, implanted with an energy of 500 eV/D, using a combination of thermal desorption spectroscopy, elastic recoil detection analysis and elastic backscattering spectroscopy. The parallel use of these techniques allowed us to directly quantify the absolute deuterium content reduction of the sample for specific desorption peaks observed during thermal annealing. In addition, the presence of a beryllium oxide surface layer was observed, despite sputter-cleaning of the sample was initially conducted in-situ. A main result was that ∼85 % of the retained deuterium got released during the primary desorption peak at 400 K. A smaller, secondary desorption peak was identified at 540 K. All deuterium
could be removed from the Be sample by heating it to a temperature of 800 K.
