Deuterium retention and blistering in tungsten foils
To investigate deuterium retention and the onset of blistering, deuterium was implanted in cold rolled tungsten foils at fluences ranging from 3 ×1020 to 3 ×1022D/m2. Ion energies were 300eV and 2000eV in order to be below and above the tungsten theoretical damage energy threshold. While energy depe...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-08-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179116301314 |
| _version_ | 1811199852221038592 |
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| author | C.N. Taylor M. Shimada B.J. Merrill |
| author_facet | C.N. Taylor M. Shimada B.J. Merrill |
| author_sort | C.N. Taylor |
| collection | DOAJ |
| description | To investigate deuterium retention and the onset of blistering, deuterium was implanted in cold rolled tungsten foils at fluences ranging from 3 ×1020 to 3 ×1022D/m2. Ion energies were 300eV and 2000eV in order to be below and above the tungsten theoretical damage energy threshold. While energy dependent phenomena were observed, blistering occurs regardless of ion energy. Both plastically and elastically deformed blisters were found, as manifest in before and after micrographs. The fraction of plastically deformed blisters did not saturate at the fluences used in these studies. However, the size of the largest blister that relaxed during TDS does saturate at ∼7µm. A simple conceptual model is presented, which proposes that the deuterium released from elastically deformed blisters appears at ∼600K in the thermal desorption spectra, which is consistent with large vacancy clusters. Keywords: Tungsten, Deuterium, Retention, Blistering, Thermal desorption spectroscopy |
| first_indexed | 2024-04-12T01:54:19Z |
| format | Article |
| id | doaj.art-eec4d7bd1b2048b98ee4e33f63838be9 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-12T01:54:19Z |
| publishDate | 2017-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-eec4d7bd1b2048b98ee4e33f63838be92022-12-22T03:52:51ZengElsevierNuclear Materials and Energy2352-17912017-08-0112689693Deuterium retention and blistering in tungsten foilsC.N. Taylor0M. Shimada1B.J. Merrill2Corresponding author.; Fusion Safety Program, Idaho National Laboratory, Idaho Falls, ID 83415, USAFusion Safety Program, Idaho National Laboratory, Idaho Falls, ID 83415, USAFusion Safety Program, Idaho National Laboratory, Idaho Falls, ID 83415, USATo investigate deuterium retention and the onset of blistering, deuterium was implanted in cold rolled tungsten foils at fluences ranging from 3 ×1020 to 3 ×1022D/m2. Ion energies were 300eV and 2000eV in order to be below and above the tungsten theoretical damage energy threshold. While energy dependent phenomena were observed, blistering occurs regardless of ion energy. Both plastically and elastically deformed blisters were found, as manifest in before and after micrographs. The fraction of plastically deformed blisters did not saturate at the fluences used in these studies. However, the size of the largest blister that relaxed during TDS does saturate at ∼7µm. A simple conceptual model is presented, which proposes that the deuterium released from elastically deformed blisters appears at ∼600K in the thermal desorption spectra, which is consistent with large vacancy clusters. Keywords: Tungsten, Deuterium, Retention, Blistering, Thermal desorption spectroscopyhttp://www.sciencedirect.com/science/article/pii/S2352179116301314 |
| spellingShingle | C.N. Taylor M. Shimada B.J. Merrill Deuterium retention and blistering in tungsten foils Nuclear Materials and Energy |
| title | Deuterium retention and blistering in tungsten foils |
| title_full | Deuterium retention and blistering in tungsten foils |
| title_fullStr | Deuterium retention and blistering in tungsten foils |
| title_full_unstemmed | Deuterium retention and blistering in tungsten foils |
| title_short | Deuterium retention and blistering in tungsten foils |
| title_sort | deuterium retention and blistering in tungsten foils |
| url | http://www.sciencedirect.com/science/article/pii/S2352179116301314 |
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