Deuterium retention after the low energy plasma irradiation was investigated using the polycrystalline tungsten samples of which grain elongation directions are parallel and perpendicular with respect to the surface. Fluence dependence of the retention measured by means of thermal desorption spectroscopy showed that it is 2-5 times larger for the sample with the perpendicular grain elongation. Thermal desorption of trapped deuterium has been modeled under the fast diffusion assumption with the defects trapping energy of about 2 eV. Possible mechanism of the deuterium retention and thermal desorption has been proposed.
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Univ Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, CanadaUniv Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, Canada
Finlay, T. J.
Davis, J. W.
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Univ Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, CanadaUniv Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, Canada
Davis, J. W.
Schwarz-Selinger, T.
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Max Planck Inst Plasma Phys, D-85748 Garching, GermanyUniv Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, Canada
Schwarz-Selinger, T.
Siketic, Z.
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Rudjer Boskovic Inst, POB 180, Zagreb 10002, CroatiaUniv Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, Canada
Siketic, Z.
Haasz, A. A.
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Univ Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, CanadaUniv Toronto, Inst Aerosp Studies, 4925 Dufferin St, N York, ON M3H 5T6, Canada