Title | The high-flux effect on deuterium retention in TiC and TaC doped tungsten at high temperatures |
Publication Type | Journal Article |
Year of Publication | 2017 |
Authors | M. Zibrov, K. Bystrov, M. Mayer, T.W Morgan, H. Kurishita |
Journal | Journal of Nuclear Materials |
Volume | 494 |
Pagination | 211-218 |
Date Published | 10/2017 |
Abstract | Samples made of tungsten (W) doped either with titanium carbide (W-1.1TiC) or tantalum carbide (W-3.3TaC) were exposed to a low-energy (40 eV/D), high-flux (1.8–5 × 1023 D/m2s) deuterium (D) plasma at temperatures of about800 K, 1050 K, and 1250 K to a fluence of about1 × 1027 D/m2. The deuterium (D) inventory in the samples was examined by nuclear reaction analysis and thermal desorption spectroscopy. At 800 K the D bulk concentrations and total D inventories in W-1.1TiC and W-3.3TaC were more than one order of magnitude higher compared to that in pure polycrystalline W. At 1050 K and 1250 K the D concentrations in all types of samples were very low (≤10−5 at. fr.); however the D inventories in W-1.1TiC were significantly higher compared to those in W-3.3TaC and pure W. It is suggested that D trapping inside the carbide precipitates and at their boundaries is essential at high temperatures and high incident fluxes, especially in W-1.1TiC. |
DOI | 10.1016/j.jnucmat.2017.07.028 |
Division | PSI |
Department | PMI |
PID | bf7c805baaa90502fb190c9ea9fd7fd3 |
Alternate Title | J. Nucl. Mater. |
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