Hydrogen isotope exchange in tungsten irradiated sequentially with low-energy deuterium and protium ions
Author | |
Abstract |
Hydrogen isotope exchange in tungsten was investigated at various temperatures both after sequential exposure to low-energy deuterium (D) and protium (H) plasmas and after sequential irradiation with low-energy D and H ions. The methods used were thermal desorption spectroscopy, and the D((3)He, p)(4)He nuclear reaction at (3)He energies varied from 0.69 to 4.0MeV, allowing the determination of the D concentration at depths of up to 6 mu m. It was found that a major portion of the deuterium initially accumulated in the D-implanted W is released on subsequent exposure to H plasma or irradiation with H ions. Depth profiling of D without and with subsequent H implantation shows strong replacement close to the surface near room temperatures, but extending to all analyzable depths at elevated temperatures. |
Year of Publication |
2011
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Journal |
Physica Scripta
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Volume |
T145
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Number of Pages |
5
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Date Published |
Dec
|
Type of Article |
Article; Proceedings Paper
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ISBN Number |
0031-8949
|
DOI |
10.1088/0031-8949/2011/T145/014037
|
PId |
c662a38fed4cf44c74f08c5bfb01e443
|
Alternate Journal |
Phys. Scr.
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Journal Article
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