Hauptseite > Publikationsdatenbank > Surface modifications and deuterium retention in polycrystalline and single crystal tungsten as a function of particle flux and temperature > print

001     838176
005     20240711113801.0
024 7 _ |a 10.1016/j.jnucmat.2017.08.026
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024 7 _ |a 1873-4820
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037 _ _ |a FZJ-2017-06850
082 _ _ |a 530
100 1 _ |a Buzi, L.
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245 _ _ |a Surface modifications and deuterium retention in polycrystalline and single crystal tungsten as a function of particle flux and temperature
260 _ _ |a Amsterdam [u.a.]
|c 2017
|b Elsevier Science
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520 _ _ |a The effects of particle flux and exposure temperature on surface modifications and deuterium (D) retention were systematically investigated on four different tungsten (W) microstructures. As-received, recrystallized, and single crystal W samples were exposed to D plasmas at surface temperatures of 530–1170 K. Two different ranges of D ion fluxes (1022 and 1024 D+m−2s−1) were used with the ion energy of 40 eV and particle fluence of 1026 D+m−2. Increasing the particle flux by two orders of magnitude caused blister formation and D retention even at temperatures above 700 K. The main effect of increasing the particle flux on total D retention was the shifting of temperature at which the retention was maximal towards higher temperatures. Diffusion-trapping simulations were used to fit the thermal desorption spectroscopy (TDS) release peaks of D, yielding one or two types of trapping sites with de-trapping energies around 2 eV
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700 1 _ |a De Temmerman, G.
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700 1 _ |a Matveev, D.
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700 1 _ |a Unterberg, B.
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700 1 _ |a Linsmeier, Ch.
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700 1 _ |a Van Oost, G.
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