Deuterium removal from radiation damage in tungsten by isotopic exchange with hydrogen atomic beam

19th Conference on Plasma Surface Interactions

Ogorodnikova, O.V.^1 ; Markelj, S.^2 ; Efimov, V.S.^1 ; Gasparyan, Yu M^1

National Research, Nuclear University, MEPhI (Moscow Engineering Physics Institute), 31 Kashirskoe highway, Moscow

115409, Russia^1

Joef Stefan Institute and Association EURATOM-MHEST, 39 Jamova cesta, Ljubljana

1000, Slovenia^2

关键词: Atomic hydrogen;    Deuterium retention;    Exposed to;    Incident energy;    Incident flux;    Isotopic exchange;    Nuclear reaction analysis;    Radiation induced defects;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/748/1/012007/pdf
DOI  :  10.1088/1742-6596/748/1/012007

来源: IOP

【 摘 要 】

The tungsten samples were pre-irradiated with self-ions to create radiation-induced defects and then exposed to the deuterium atomic beam. The deuterium removal was studied by isotopic exchange with atomic hydrogen beam. Modification of the deuterium depth profile in self-ion irradiated tungsten under isotopic exchange up to a depth of 6 μm was measured in- situ by nuclear reaction analysis. The total deuterium retention after isotopic exchange was measured by thermal desorption spectroscopy. It is shown that the efficiency of the deuterium removal increases with increasing of the hydrogen incident flux, incident energy and temperature of the tungsten sample.