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Influence of dynamic annealing of irradiation defects on the deuterium retention behaviors in tungsten irradiated with neutron.
- Source :
-
Fusion Engineering & Design . Sep2019:Part B, Vol. 146, p1624-1627. 4p. - Publication Year :
- 2019
-
Abstract
- Tungsten (W) samples were damaged by neutron and 6.4 MeV Fe-ion irradiation above 1000 K simulating the divertor operation temperature. Deuterium (D) retention properties were examined by decorating the damaged W with D and subsequent thermal desorption spectroscopy (TDS) measurements. Vacancy clusters were the major D trapping site in the W irradiated with Fe-ion at 873 K, although D retention by vacancy clusters decreased in the W irradiated with Fe-ion at 1173 K due to dynamic annealing. The D de-trapping activation energy from vacancy clusters was found to be 1.85 eV. D retention in neutron damage W was larger than that damaged by Fe-ion due to the uniform distribution of irradiation defects. The D desorption behaviors from neutron damaged W was simulated well by assuming the D de-trapping activation energy to be 1.52 eV. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09203796
- Volume :
- 146
- Database :
- Academic Search Index
- Journal :
- Fusion Engineering & Design
- Publication Type :
- Academic Journal
- Accession number :
- 138692743
- Full Text :
- https://doi.org/10.1016/j.fusengdes.2019.03.003