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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Penn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA
Sharkass, Meral
Dwivedi, Swarit
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Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA
Dwivedi, Swarit
Shin, Yun Kyung
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Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA
Shin, Yun Kyung
Nieto-Perez, Martin
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Penn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA
Nieto-Perez, Martin
van Duin, Adri C. T.
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Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA
van Duin, Adri C. T.
Krstic, Predrag S.
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TheoretiK, Port Jefferson Stn, NY 11776 USA
SUNY Stony Brook, Dept Mat Sci & Chem Engn, Stony Brook, NY 11794 USAPenn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, University Pk, PA 16801 USA